21164520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13567}}^1$

素因数の和:13594

約数の個数: 64

約数和(自身を含む): 68382720

約数和(自身を除く): 47218200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13567, 27134, 40701, 54268, 67835, 81402, 108536, 135670, 162804, 176371, 203505, 271340, 325608, 352742, 407010, 529113, 542680, 705484, 814020, 881855, 1058226, 1410968, 1628040, 1763710, 2116452, 2645565, 3527420, 4232904, 5291130, 7054840, 10582260, 21164520]

約数ペア:

[(1, 21164520), (2, 10582260), (3, 7054840), (4, 5291130), (5, 4232904), (6, 3527420), (8, 2645565), (10, 2116452), (12, 1763710), (13, 1628040), (15, 1410968), (20, 1058226), (24, 881855), (26, 814020), (30, 705484), (39, 542680), (40, 529113), (52, 407010), (60, 352742), (65, 325608), (78, 271340), (104, 203505), (120, 176371), (130, 162804), (156, 135670), (195, 108536), (260, 81402), (312, 67835), (390, 54268), (520, 40701), (780, 27134), (1560, 13567)]