64720340

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1\times {\mathrm{457}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 139499472

約数和(自身を除く): 74779132

約数列:

[1, 2, 4, 5, 10, 20, 73, 97, 146, 194, 292, 365, 388, 457, 485, 730, 914, 970, 1460, 1828, 1940, 2285, 4570, 7081, 9140, 14162, 28324, 33361, 35405, 44329, 66722, 70810, 88658, 133444, 141620, 166805, 177316, 221645, 333610, 443290, 667220, 886580, 3236017, 6472034, 12944068, 16180085, 32360170, 64720340]

約数ペア:

[(1, 64720340), (2, 32360170), (4, 16180085), (5, 12944068), (10, 6472034), (20, 3236017), (73, 886580), (97, 667220), (146, 443290), (194, 333610), (292, 221645), (365, 177316), (388, 166805), (457, 141620), (485, 133444), (730, 88658), (914, 70810), (970, 66722), (1460, 44329), (1828, 35405), (1940, 33361), (2285, 28324), (4570, 14162), (7081, 9140)]