639578608

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{67867}}^1$

素因数の和:67925

約数の個数: 40

約数和(自身を含む): 1346501120

約数和(自身を除く): 706922512

約数列:

[1, 2, 4, 8, 16, 19, 31, 38, 62, 76, 124, 152, 248, 304, 496, 589, 1178, 2356, 4712, 9424, 67867, 135734, 271468, 542936, 1085872, 1289473, 2103877, 2578946, 4207754, 5157892, 8415508, 10315784, 16831016, 20631568, 33662032, 39973663, 79947326, 159894652, 319789304, 639578608]

約数ペア:

[(1, 639578608), (2, 319789304), (4, 159894652), (8, 79947326), (16, 39973663), (19, 33662032), (31, 20631568), (38, 16831016), (62, 10315784), (76, 8415508), (124, 5157892), (152, 4207754), (248, 2578946), (304, 2103877), (496, 1289473), (589, 1085872), (1178, 542936), (2356, 271468), (4712, 135734), (9424, 67867)]