15155920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:117

約数の個数: 120

約数和(自身を含む): 40845600

約数和(自身を除く): 25689680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 59, 65, 76, 80, 95, 104, 118, 130, 152, 169, 190, 208, 236, 247, 260, 295, 304, 338, 380, 472, 494, 520, 590, 676, 760, 767, 845, 944, 988, 1040, 1121, 1180, 1235, 1352, 1520, 1534, 1690, 1976, 2242, 2360, 2470, 2704, 3068, 3211, 3380, 3835, 3952, 4484, 4720, 4940, 5605, 6136, 6422, 6760, 7670, 8968, 9880, 9971, 11210, 12272, 12844, 13520, 14573, 15340, 16055, 17936, 19760, 19942, 22420, 25688, 29146, 30680, 32110, 39884, 44840, 49855, 51376, 58292, 61360, 64220, 72865, 79768, 89680, 99710, 116584, 128440, 145730, 159536, 189449, 199420, 233168, 256880, 291460, 378898, 398840, 582920, 757796, 797680, 947245, 1165840, 1515592, 1894490, 3031184, 3788980, 7577960, 15155920]

約数ペア:

[(1, 15155920), (2, 7577960), (4, 3788980), (5, 3031184), (8, 1894490), (10, 1515592), (13, 1165840), (16, 947245), (19, 797680), (20, 757796), (26, 582920), (38, 398840), (40, 378898), (52, 291460), (59, 256880), (65, 233168), (76, 199420), (80, 189449), (95, 159536), (104, 145730), (118, 128440), (130, 116584), (152, 99710), (169, 89680), (190, 79768), (208, 72865), (236, 64220), (247, 61360), (260, 58292), (295, 51376), (304, 49855), (338, 44840), (380, 39884), (472, 32110), (494, 30680), (520, 29146), (590, 25688), (676, 22420), (760, 19942), (767, 19760), (845, 17936), (944, 16055), (988, 15340), (1040, 14573), (1121, 13520), (1180, 12844), (1235, 12272), (1352, 11210), (1520, 9971), (1534, 9880), (1690, 8968), (1976, 7670), (2242, 6760), (2360, 6422), (2470, 6136), (2704, 5605), (3068, 4940), (3211, 4720), (3380, 4484), (3835, 3952)]