1640383940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{293}}^1\times {\mathrm{353}}^1$

素因数の和:729

約数の個数: 96

約数和(自身を含む): 3794194656

約数和(自身を除く): 2153810716

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 293, 305, 353, 586, 610, 706, 793, 1172, 1220, 1412, 1465, 1586, 1765, 2930, 3172, 3530, 3809, 3965, 4589, 5860, 7060, 7618, 7930, 9178, 15236, 15860, 17873, 18356, 19045, 21533, 22945, 35746, 38090, 43066, 45890, 71492, 76180, 86132, 89365, 91780, 103429, 107665, 178730, 206858, 215330, 232349, 279929, 357460, 413716, 430660, 464698, 517145, 559858, 929396, 1034290, 1119716, 1161745, 1344577, 1399645, 2068580, 2323490, 2689154, 2799290, 4646980, 5378308, 5598580, 6309169, 6722885, 12618338, 13445770, 25236676, 26891540, 31545845, 63091690, 82019197, 126183380, 164038394, 328076788, 410095985, 820191970, 1640383940]

約数ペア:

[(1, 1640383940), (2, 820191970), (4, 410095985), (5, 328076788), (10, 164038394), (13, 126183380), (20, 82019197), (26, 63091690), (52, 31545845), (61, 26891540), (65, 25236676), (122, 13445770), (130, 12618338), (244, 6722885), (260, 6309169), (293, 5598580), (305, 5378308), (353, 4646980), (586, 2799290), (610, 2689154), (706, 2323490), (793, 2068580), (1172, 1399645), (1220, 1344577), (1412, 1161745), (1465, 1119716), (1586, 1034290), (1765, 929396), (2930, 559858), (3172, 517145), (3530, 464698), (3809, 430660), (3965, 413716), (4589, 357460), (5860, 279929), (7060, 232349), (7618, 215330), (7930, 206858), (9178, 178730), (15236, 107665), (15860, 103429), (17873, 91780), (18356, 89365), (19045, 86132), (21533, 76180), (22945, 71492), (35746, 45890), (38090, 43066)]