21457410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1487}}^1$

素因数の和:1547

約数の個数: 64

約数和(自身を含む): 56996352

約数和(自身を除く): 35538942

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 37, 39, 65, 74, 78, 111, 130, 185, 195, 222, 370, 390, 481, 555, 962, 1110, 1443, 1487, 2405, 2886, 2974, 4461, 4810, 7215, 7435, 8922, 14430, 14870, 19331, 22305, 38662, 44610, 55019, 57993, 96655, 110038, 115986, 165057, 193310, 275095, 289965, 330114, 550190, 579930, 715247, 825285, 1430494, 1650570, 2145741, 3576235, 4291482, 7152470, 10728705, 21457410]

約数ペア:

[(1, 21457410), (2, 10728705), (3, 7152470), (5, 4291482), (6, 3576235), (10, 2145741), (13, 1650570), (15, 1430494), (26, 825285), (30, 715247), (37, 579930), (39, 550190), (65, 330114), (74, 289965), (78, 275095), (111, 193310), (130, 165057), (185, 115986), (195, 110038), (222, 96655), (370, 57993), (390, 55019), (481, 44610), (555, 38662), (962, 22305), (1110, 19331), (1443, 14870), (1487, 14430), (2405, 8922), (2886, 7435), (2974, 7215), (4461, 4810)]