21394380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{383}}^1$

素因数の和:428

約数の個数: 144

約数和(自身を含む): 73543680

約数和(自身を除く): 52149300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 49, 57, 60, 70, 76, 84, 95, 98, 105, 114, 133, 140, 147, 190, 196, 210, 228, 245, 266, 285, 294, 380, 383, 399, 420, 490, 532, 570, 588, 665, 735, 766, 798, 931, 980, 1140, 1149, 1330, 1470, 1532, 1596, 1862, 1915, 1995, 2298, 2660, 2681, 2793, 2940, 3724, 3830, 3990, 4596, 4655, 5362, 5586, 5745, 7277, 7660, 7980, 8043, 9310, 10724, 11172, 11490, 13405, 13965, 14554, 16086, 18620, 18767, 21831, 22980, 26810, 27930, 29108, 32172, 36385, 37534, 40215, 43662, 50939, 53620, 55860, 56301, 72770, 75068, 80430, 87324, 93835, 101878, 109155, 112602, 145540, 152817, 160860, 187670, 203756, 218310, 225204, 254695, 281505, 305634, 356573, 375340, 436620, 509390, 563010, 611268, 713146, 764085, 1018780, 1069719, 1126020, 1426292, 1528170, 1782865, 2139438, 3056340, 3565730, 4278876, 5348595, 7131460, 10697190, 21394380]

約数ペア:

[(1, 21394380), (2, 10697190), (3, 7131460), (4, 5348595), (5, 4278876), (6, 3565730), (7, 3056340), (10, 2139438), (12, 1782865), (14, 1528170), (15, 1426292), (19, 1126020), (20, 1069719), (21, 1018780), (28, 764085), (30, 713146), (35, 611268), (38, 563010), (42, 509390), (49, 436620), (57, 375340), (60, 356573), (70, 305634), (76, 281505), (84, 254695), (95, 225204), (98, 218310), (105, 203756), (114, 187670), (133, 160860), (140, 152817), (147, 145540), (190, 112602), (196, 109155), (210, 101878), (228, 93835), (245, 87324), (266, 80430), (285, 75068), (294, 72770), (380, 56301), (383, 55860), (399, 53620), (420, 50939), (490, 43662), (532, 40215), (570, 37534), (588, 36385), (665, 32172), (735, 29108), (766, 27930), (798, 26810), (931, 22980), (980, 21831), (1140, 18767), (1149, 18620), (1330, 16086), (1470, 14554), (1532, 13965), (1596, 13405), (1862, 11490), (1915, 11172), (1995, 10724), (2298, 9310), (2660, 8043), (2681, 7980), (2793, 7660), (2940, 7277), (3724, 5745), (3830, 5586), (3990, 5362), (4596, 4655)]