21829860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1$

素因数の和:538

約数の個数: 144

約数和(自身を含む): 75216960

約数和(自身を除く): 53387100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 38, 39, 45, 52, 57, 60, 65, 76, 78, 90, 95, 114, 117, 130, 156, 171, 180, 190, 195, 228, 234, 247, 260, 285, 342, 380, 390, 468, 491, 494, 570, 585, 684, 741, 780, 855, 982, 988, 1140, 1170, 1235, 1473, 1482, 1710, 1964, 2223, 2340, 2455, 2470, 2946, 2964, 3420, 3705, 4419, 4446, 4910, 4940, 5892, 6383, 7365, 7410, 8838, 8892, 9329, 9820, 11115, 12766, 14730, 14820, 17676, 18658, 19149, 22095, 22230, 25532, 27987, 29460, 31915, 37316, 38298, 44190, 44460, 46645, 55974, 57447, 63830, 76596, 83961, 88380, 93290, 95745, 111948, 114894, 121277, 127660, 139935, 167922, 186580, 191490, 229788, 242554, 279870, 287235, 335844, 363831, 382980, 419805, 485108, 559740, 574470, 606385, 727662, 839610, 1091493, 1148940, 1212770, 1455324, 1679220, 1819155, 2182986, 2425540, 3638310, 4365972, 5457465, 7276620, 10914930, 21829860]

約数ペア:

[(1, 21829860), (2, 10914930), (3, 7276620), (4, 5457465), (5, 4365972), (6, 3638310), (9, 2425540), (10, 2182986), (12, 1819155), (13, 1679220), (15, 1455324), (18, 1212770), (19, 1148940), (20, 1091493), (26, 839610), (30, 727662), (36, 606385), (38, 574470), (39, 559740), (45, 485108), (52, 419805), (57, 382980), (60, 363831), (65, 335844), (76, 287235), (78, 279870), (90, 242554), (95, 229788), (114, 191490), (117, 186580), (130, 167922), (156, 139935), (171, 127660), (180, 121277), (190, 114894), (195, 111948), (228, 95745), (234, 93290), (247, 88380), (260, 83961), (285, 76596), (342, 63830), (380, 57447), (390, 55974), (468, 46645), (491, 44460), (494, 44190), (570, 38298), (585, 37316), (684, 31915), (741, 29460), (780, 27987), (855, 25532), (982, 22230), (988, 22095), (1140, 19149), (1170, 18658), (1235, 17676), (1473, 14820), (1482, 14730), (1710, 12766), (1964, 11115), (2223, 9820), (2340, 9329), (2455, 8892), (2470, 8838), (2946, 7410), (2964, 7365), (3420, 6383), (3705, 5892), (4419, 4940), (4446, 4910)]