61990520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1567}}^1$

素因数の和:1644

約数の個数: 64

約数和(自身を含む): 149022720

約数和(自身を除く): 87032200

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 43, 46, 86, 92, 115, 172, 184, 215, 230, 344, 430, 460, 860, 920, 989, 1567, 1720, 1978, 3134, 3956, 4945, 6268, 7835, 7912, 9890, 12536, 15670, 19780, 31340, 36041, 39560, 62680, 67381, 72082, 134762, 144164, 180205, 269524, 288328, 336905, 360410, 539048, 673810, 720820, 1347620, 1441640, 1549763, 2695240, 3099526, 6199052, 7748815, 12398104, 15497630, 30995260, 61990520]

約数ペア:

[(1, 61990520), (2, 30995260), (4, 15497630), (5, 12398104), (8, 7748815), (10, 6199052), (20, 3099526), (23, 2695240), (40, 1549763), (43, 1441640), (46, 1347620), (86, 720820), (92, 673810), (115, 539048), (172, 360410), (184, 336905), (215, 288328), (230, 269524), (344, 180205), (430, 144164), (460, 134762), (860, 72082), (920, 67381), (989, 62680), (1567, 39560), (1720, 36041), (1978, 31340), (3134, 19780), (3956, 15670), (4945, 12536), (6268, 9890), (7835, 7912)]