7788440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:624

約数の個数: 64

約数和(自身を含む): 19768320

約数和(自身を除く): 11979880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 571, 620, 682, 1142, 1240, 1364, 1705, 2284, 2728, 2855, 3410, 4568, 5710, 6281, 6820, 11420, 12562, 13640, 17701, 22840, 25124, 31405, 35402, 50248, 62810, 70804, 88505, 125620, 141608, 177010, 194711, 251240, 354020, 389422, 708040, 778844, 973555, 1557688, 1947110, 3894220, 7788440]

約数ペア:

[(1, 7788440), (2, 3894220), (4, 1947110), (5, 1557688), (8, 973555), (10, 778844), (11, 708040), (20, 389422), (22, 354020), (31, 251240), (40, 194711), (44, 177010), (55, 141608), (62, 125620), (88, 88505), (110, 70804), (124, 62810), (155, 50248), (220, 35402), (248, 31405), (310, 25124), (341, 22840), (440, 17701), (571, 13640), (620, 12562), (682, 11420), (1142, 6820), (1240, 6281), (1364, 5710), (1705, 4568), (2284, 3410), (2728, 2855)]