209920100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{1429}}^1$

素因数の和:1569

約数の個数: 72

約数和(自身を含む): 495254760

約数和(自身を除く): 285334660

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 113, 130, 226, 260, 325, 452, 565, 650, 1130, 1300, 1429, 1469, 2260, 2825, 2858, 2938, 5650, 5716, 5876, 7145, 7345, 11300, 14290, 14690, 18577, 28580, 29380, 35725, 36725, 37154, 71450, 73450, 74308, 92885, 142900, 146900, 161477, 185770, 322954, 371540, 464425, 645908, 807385, 928850, 1614770, 1857700, 2099201, 3229540, 4036925, 4198402, 8073850, 8396804, 10496005, 16147700, 20992010, 41984020, 52480025, 104960050, 209920100]

約数ペア:

[(1, 209920100), (2, 104960050), (4, 52480025), (5, 41984020), (10, 20992010), (13, 16147700), (20, 10496005), (25, 8396804), (26, 8073850), (50, 4198402), (52, 4036925), (65, 3229540), (100, 2099201), (113, 1857700), (130, 1614770), (226, 928850), (260, 807385), (325, 645908), (452, 464425), (565, 371540), (650, 322954), (1130, 185770), (1300, 161477), (1429, 146900), (1469, 142900), (2260, 92885), (2825, 74308), (2858, 73450), (2938, 71450), (5650, 37154), (5716, 36725), (5876, 35725), (7145, 29380), (7345, 28580), (11300, 18577), (14290, 14690)]