398783440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{461}}^1\times {\mathrm{983}}^1$

素因数の和:1468

約数の個数: 80

約数和(自身を含む): 1014685056

約数和(自身を除く): 615901616

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 461, 880, 922, 983, 1844, 1966, 2305, 3688, 3932, 4610, 4915, 5071, 7376, 7864, 9220, 9830, 10142, 10813, 15728, 18440, 19660, 20284, 21626, 25355, 36880, 39320, 40568, 43252, 50710, 54065, 78640, 81136, 86504, 101420, 108130, 173008, 202840, 216260, 405680, 432520, 453163, 865040, 906326, 1812652, 2265815, 3625304, 4531630, 4984793, 7250608, 9063260, 9969586, 18126520, 19939172, 24923965, 36253040, 39878344, 49847930, 79756688, 99695860, 199391720, 398783440]

約数ペア:

[(1, 398783440), (2, 199391720), (4, 99695860), (5, 79756688), (8, 49847930), (10, 39878344), (11, 36253040), (16, 24923965), (20, 19939172), (22, 18126520), (40, 9969586), (44, 9063260), (55, 7250608), (80, 4984793), (88, 4531630), (110, 3625304), (176, 2265815), (220, 1812652), (440, 906326), (461, 865040), (880, 453163), (922, 432520), (983, 405680), (1844, 216260), (1966, 202840), (2305, 173008), (3688, 108130), (3932, 101420), (4610, 86504), (4915, 81136), (5071, 78640), (7376, 54065), (7864, 50710), (9220, 43252), (9830, 40568), (10142, 39320), (10813, 36880), (15728, 25355), (18440, 21626), (19660, 20284)]