21132540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{821}}^1$

素因数の和:860

約数の個数: 144

約数和(自身を含む): 75400416

約数和(自身を除く): 54267876

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 26, 30, 33, 36, 39, 44, 45, 52, 55, 60, 65, 66, 78, 90, 99, 110, 117, 130, 132, 143, 156, 165, 180, 195, 198, 220, 234, 260, 286, 330, 390, 396, 429, 468, 495, 572, 585, 660, 715, 780, 821, 858, 990, 1170, 1287, 1430, 1642, 1716, 1980, 2145, 2340, 2463, 2574, 2860, 3284, 4105, 4290, 4926, 5148, 6435, 7389, 8210, 8580, 9031, 9852, 10673, 12315, 12870, 14778, 16420, 18062, 21346, 24630, 25740, 27093, 29556, 32019, 36124, 36945, 42692, 45155, 49260, 53365, 54186, 64038, 73890, 81279, 90310, 96057, 106730, 108372, 117403, 128076, 135465, 147780, 160095, 162558, 180620, 192114, 213460, 234806, 270930, 320190, 325116, 352209, 384228, 406395, 469612, 480285, 541860, 587015, 640380, 704418, 812790, 960570, 1056627, 1174030, 1408836, 1625580, 1761045, 1921140, 2113254, 2348060, 3522090, 4226508, 5283135, 7044180, 10566270, 21132540]

約数ペア:

[(1, 21132540), (2, 10566270), (3, 7044180), (4, 5283135), (5, 4226508), (6, 3522090), (9, 2348060), (10, 2113254), (11, 1921140), (12, 1761045), (13, 1625580), (15, 1408836), (18, 1174030), (20, 1056627), (22, 960570), (26, 812790), (30, 704418), (33, 640380), (36, 587015), (39, 541860), (44, 480285), (45, 469612), (52, 406395), (55, 384228), (60, 352209), (65, 325116), (66, 320190), (78, 270930), (90, 234806), (99, 213460), (110, 192114), (117, 180620), (130, 162558), (132, 160095), (143, 147780), (156, 135465), (165, 128076), (180, 117403), (195, 108372), (198, 106730), (220, 96057), (234, 90310), (260, 81279), (286, 73890), (330, 64038), (390, 54186), (396, 53365), (429, 49260), (468, 45155), (495, 42692), (572, 36945), (585, 36124), (660, 32019), (715, 29556), (780, 27093), (821, 25740), (858, 24630), (990, 21346), (1170, 18062), (1287, 16420), (1430, 14778), (1642, 12870), (1716, 12315), (1980, 10673), (2145, 9852), (2340, 9031), (2463, 8580), (2574, 8210), (2860, 7389), (3284, 6435), (4105, 5148), (4290, 4926)]