61321960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{563}}^1$

素因数の和:970

約数の個数: 64

約数和(自身を含む): 158371200

約数和(自身を除く): 97049240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 389, 563, 778, 1126, 1556, 1945, 2252, 2723, 2815, 3112, 3890, 3941, 4504, 5446, 5630, 7780, 7882, 10892, 11260, 13615, 15560, 15764, 19705, 21784, 22520, 27230, 31528, 39410, 54460, 78820, 108920, 157640, 219007, 438014, 876028, 1095035, 1533049, 1752056, 2190070, 3066098, 4380140, 6132196, 7665245, 8760280, 12264392, 15330490, 30660980, 61321960]

約数ペア:

[(1, 61321960), (2, 30660980), (4, 15330490), (5, 12264392), (7, 8760280), (8, 7665245), (10, 6132196), (14, 4380140), (20, 3066098), (28, 2190070), (35, 1752056), (40, 1533049), (56, 1095035), (70, 876028), (140, 438014), (280, 219007), (389, 157640), (563, 108920), (778, 78820), (1126, 54460), (1556, 39410), (1945, 31528), (2252, 27230), (2723, 22520), (2815, 21784), (3112, 19705), (3890, 15764), (3941, 15560), (4504, 13615), (5446, 11260), (5630, 10892), (7780, 7882)]