71990780

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1\times {\mathrm{227}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 154326816

約数和(自身を除く): 82336036

約数列:

[1, 2, 4, 5, 10, 20, 101, 157, 202, 227, 314, 404, 454, 505, 628, 785, 908, 1010, 1135, 1570, 2020, 2270, 3140, 4540, 15857, 22927, 31714, 35639, 45854, 63428, 71278, 79285, 91708, 114635, 142556, 158570, 178195, 229270, 317140, 356390, 458540, 712780, 3599539, 7199078, 14398156, 17997695, 35995390, 71990780]

約数ペア:

[(1, 71990780), (2, 35995390), (4, 17997695), (5, 14398156), (10, 7199078), (20, 3599539), (101, 712780), (157, 458540), (202, 356390), (227, 317140), (314, 229270), (404, 178195), (454, 158570), (505, 142556), (628, 114635), (785, 91708), (908, 79285), (1010, 71278), (1135, 63428), (1570, 45854), (2020, 35639), (2270, 31714), (3140, 22927), (4540, 15857)]