18743920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{269}}^1$

素因数の和:362

約数の個数: 80

約数和(自身を含む): 47809440

約数和(自身を除く): 29065520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 67, 80, 104, 130, 134, 208, 260, 268, 269, 335, 520, 536, 538, 670, 871, 1040, 1072, 1076, 1340, 1345, 1742, 2152, 2680, 2690, 3484, 3497, 4304, 4355, 5360, 5380, 6968, 6994, 8710, 10760, 13936, 13988, 17420, 17485, 18023, 21520, 27976, 34840, 34970, 36046, 55952, 69680, 69940, 72092, 90115, 139880, 144184, 180230, 234299, 279760, 288368, 360460, 468598, 720920, 937196, 1171495, 1441840, 1874392, 2342990, 3748784, 4685980, 9371960, 18743920]

約数ペア:

[(1, 18743920), (2, 9371960), (4, 4685980), (5, 3748784), (8, 2342990), (10, 1874392), (13, 1441840), (16, 1171495), (20, 937196), (26, 720920), (40, 468598), (52, 360460), (65, 288368), (67, 279760), (80, 234299), (104, 180230), (130, 144184), (134, 139880), (208, 90115), (260, 72092), (268, 69940), (269, 69680), (335, 55952), (520, 36046), (536, 34970), (538, 34840), (670, 27976), (871, 21520), (1040, 18023), (1072, 17485), (1076, 17420), (1340, 13988), (1345, 13936), (1742, 10760), (2152, 8710), (2680, 6994), (2690, 6968), (3484, 5380), (3497, 5360), (4304, 4355)]