28991340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{173}}^1$

素因数の和:221

約数の個数: 216

約数和(自身を含む): 108304560

約数和(自身を除く): 79313220

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 49, 57, 60, 63, 70, 76, 84, 90, 95, 98, 105, 114, 126, 133, 140, 147, 171, 173, 180, 190, 196, 210, 228, 245, 252, 266, 285, 294, 315, 342, 346, 380, 399, 420, 441, 490, 519, 532, 570, 588, 630, 665, 684, 692, 735, 798, 855, 865, 882, 931, 980, 1038, 1140, 1197, 1211, 1260, 1330, 1470, 1557, 1596, 1710, 1730, 1764, 1862, 1995, 2076, 2205, 2394, 2422, 2595, 2660, 2793, 2940, 3114, 3287, 3420, 3460, 3633, 3724, 3990, 4410, 4655, 4788, 4844, 5190, 5586, 5985, 6055, 6228, 6574, 7266, 7785, 7980, 8379, 8477, 8820, 9310, 9861, 10380, 10899, 11172, 11970, 12110, 13148, 13965, 14532, 15570, 16435, 16758, 16954, 18165, 18620, 19722, 21798, 23009, 23940, 24220, 25431, 27930, 29583, 31140, 32870, 33516, 33908, 36330, 39444, 41895, 42385, 43596, 46018, 49305, 50862, 54495, 55860, 59166, 65740, 69027, 72660, 76293, 83790, 84770, 92036, 98610, 101724, 108990, 115045, 118332, 127155, 138054, 147915, 152586, 161063, 167580, 169540, 197220, 207081, 217980, 230090, 254310, 276108, 295830, 305172, 322126, 345135, 381465, 414162, 460180, 483189, 508620, 591660, 644252, 690270, 762930, 805315, 828324, 966378, 1035405, 1380540, 1449567, 1525860, 1610630, 1932756, 2070810, 2415945, 2899134, 3221260, 4141620, 4831890, 5798268, 7247835, 9663780, 14495670, 28991340]

約数ペア:

[(1, 28991340), (2, 14495670), (3, 9663780), (4, 7247835), (5, 5798268), (6, 4831890), (7, 4141620), (9, 3221260), (10, 2899134), (12, 2415945), (14, 2070810), (15, 1932756), (18, 1610630), (19, 1525860), (20, 1449567), (21, 1380540), (28, 1035405), (30, 966378), (35, 828324), (36, 805315), (38, 762930), (42, 690270), (45, 644252), (49, 591660), (57, 508620), (60, 483189), (63, 460180), (70, 414162), (76, 381465), (84, 345135), (90, 322126), (95, 305172), (98, 295830), (105, 276108), (114, 254310), (126, 230090), (133, 217980), (140, 207081), (147, 197220), (171, 169540), (173, 167580), (180, 161063), (190, 152586), (196, 147915), (210, 138054), (228, 127155), (245, 118332), (252, 115045), (266, 108990), (285, 101724), (294, 98610), (315, 92036), (342, 84770), (346, 83790), (380, 76293), (399, 72660), (420, 69027), (441, 65740), (490, 59166), (519, 55860), (532, 54495), (570, 50862), (588, 49305), (630, 46018), (665, 43596), (684, 42385), (692, 41895), (735, 39444), (798, 36330), (855, 33908), (865, 33516), (882, 32870), (931, 31140), (980, 29583), (1038, 27930), (1140, 25431), (1197, 24220), (1211, 23940), (1260, 23009), (1330, 21798), (1470, 19722), (1557, 18620), (1596, 18165), (1710, 16954), (1730, 16758), (1764, 16435), (1862, 15570), (1995, 14532), (2076, 13965), (2205, 13148), (2394, 12110), (2422, 11970), (2595, 11172), (2660, 10899), (2793, 10380), (2940, 9861), (3114, 9310), (3287, 8820), (3420, 8477), (3460, 8379), (3633, 7980), (3724, 7785), (3990, 7266), (4410, 6574), (4655, 6228), (4788, 6055), (4844, 5985), (5190, 5586)]