8389840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:260

約数の個数: 80

約数和(自身を含む): 21427200

約数和(自身を除く): 13037360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 34, 40, 62, 68, 80, 85, 124, 136, 155, 170, 199, 248, 272, 310, 340, 398, 496, 527, 620, 680, 796, 995, 1054, 1240, 1360, 1592, 1990, 2108, 2480, 2635, 3184, 3383, 3980, 4216, 5270, 6169, 6766, 7960, 8432, 10540, 12338, 13532, 15920, 16915, 21080, 24676, 27064, 30845, 33830, 42160, 49352, 54128, 61690, 67660, 98704, 104873, 123380, 135320, 209746, 246760, 270640, 419492, 493520, 524365, 838984, 1048730, 1677968, 2097460, 4194920, 8389840]

約数ペア:

[(1, 8389840), (2, 4194920), (4, 2097460), (5, 1677968), (8, 1048730), (10, 838984), (16, 524365), (17, 493520), (20, 419492), (31, 270640), (34, 246760), (40, 209746), (62, 135320), (68, 123380), (80, 104873), (85, 98704), (124, 67660), (136, 61690), (155, 54128), (170, 49352), (199, 42160), (248, 33830), (272, 30845), (310, 27064), (340, 24676), (398, 21080), (496, 16915), (527, 15920), (620, 13532), (680, 12338), (796, 10540), (995, 8432), (1054, 7960), (1240, 6766), (1360, 6169), (1592, 5270), (1990, 4216), (2108, 3980), (2480, 3383), (2635, 3184)]