18178680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:341

約数の個数: 128

約数和(自身を含む): 60318720

約数和(自身を除く): 42140040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 43, 52, 60, 65, 78, 86, 104, 120, 129, 130, 156, 172, 195, 215, 258, 260, 271, 312, 344, 390, 430, 516, 520, 542, 559, 645, 780, 813, 860, 1032, 1084, 1118, 1290, 1355, 1560, 1626, 1677, 1720, 2168, 2236, 2580, 2710, 2795, 3252, 3354, 3523, 4065, 4472, 5160, 5420, 5590, 6504, 6708, 7046, 8130, 8385, 10569, 10840, 11180, 11653, 13416, 14092, 16260, 16770, 17615, 21138, 22360, 23306, 28184, 32520, 33540, 34959, 35230, 42276, 46612, 52845, 58265, 67080, 69918, 70460, 84552, 93224, 105690, 116530, 139836, 140920, 151489, 174795, 211380, 233060, 279672, 302978, 349590, 422760, 454467, 466120, 605956, 699180, 757445, 908934, 1211912, 1398360, 1514890, 1817868, 2272335, 3029780, 3635736, 4544670, 6059560, 9089340, 18178680]

約数ペア:

[(1, 18178680), (2, 9089340), (3, 6059560), (4, 4544670), (5, 3635736), (6, 3029780), (8, 2272335), (10, 1817868), (12, 1514890), (13, 1398360), (15, 1211912), (20, 908934), (24, 757445), (26, 699180), (30, 605956), (39, 466120), (40, 454467), (43, 422760), (52, 349590), (60, 302978), (65, 279672), (78, 233060), (86, 211380), (104, 174795), (120, 151489), (129, 140920), (130, 139836), (156, 116530), (172, 105690), (195, 93224), (215, 84552), (258, 70460), (260, 69918), (271, 67080), (312, 58265), (344, 52845), (390, 46612), (430, 42276), (516, 35230), (520, 34959), (542, 33540), (559, 32520), (645, 28184), (780, 23306), (813, 22360), (860, 21138), (1032, 17615), (1084, 16770), (1118, 16260), (1290, 14092), (1355, 13416), (1560, 11653), (1626, 11180), (1677, 10840), (1720, 10569), (2168, 8385), (2236, 8130), (2580, 7046), (2710, 6708), (2795, 6504), (3252, 5590), (3354, 5420), (3523, 5160), (4065, 4472)]