31309720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3169}}^1$

素因数の和:3212

約数の個数: 64

約数和(自身を含む): 79884000

約数和(自身を除く): 48574280

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 3169, 4940, 6338, 9880, 12676, 15845, 25352, 31690, 41197, 60211, 63380, 82394, 120422, 126760, 164788, 205985, 240844, 301055, 329576, 411970, 481688, 602110, 782743, 823940, 1204220, 1565486, 1647880, 2408440, 3130972, 3913715, 6261944, 7827430, 15654860, 31309720]

約数ペア:

[(1, 31309720), (2, 15654860), (4, 7827430), (5, 6261944), (8, 3913715), (10, 3130972), (13, 2408440), (19, 1647880), (20, 1565486), (26, 1204220), (38, 823940), (40, 782743), (52, 602110), (65, 481688), (76, 411970), (95, 329576), (104, 301055), (130, 240844), (152, 205985), (190, 164788), (247, 126760), (260, 120422), (380, 82394), (494, 63380), (520, 60211), (760, 41197), (988, 31690), (1235, 25352), (1976, 15845), (2470, 12676), (3169, 9880), (4940, 6338)]