20535240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:403

約数の個数: 128

約数和(自身を含む): 68843520

約数和(自身を除く): 48308280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 47, 55, 60, 66, 88, 94, 110, 120, 132, 141, 165, 188, 220, 235, 264, 282, 330, 331, 376, 440, 470, 517, 564, 660, 662, 705, 940, 993, 1034, 1128, 1320, 1324, 1410, 1551, 1655, 1880, 1986, 2068, 2585, 2648, 2820, 3102, 3310, 3641, 3972, 4136, 4965, 5170, 5640, 6204, 6620, 7282, 7755, 7944, 9930, 10340, 10923, 12408, 13240, 14564, 15510, 15557, 18205, 19860, 20680, 21846, 29128, 31020, 31114, 36410, 39720, 43692, 46671, 54615, 62040, 62228, 72820, 77785, 87384, 93342, 109230, 124456, 145640, 155570, 171127, 186684, 218460, 233355, 311140, 342254, 373368, 436920, 466710, 513381, 622280, 684508, 855635, 933420, 1026762, 1369016, 1711270, 1866840, 2053524, 2566905, 3422540, 4107048, 5133810, 6845080, 10267620, 20535240]

約数ペア:

[(1, 20535240), (2, 10267620), (3, 6845080), (4, 5133810), (5, 4107048), (6, 3422540), (8, 2566905), (10, 2053524), (11, 1866840), (12, 1711270), (15, 1369016), (20, 1026762), (22, 933420), (24, 855635), (30, 684508), (33, 622280), (40, 513381), (44, 466710), (47, 436920), (55, 373368), (60, 342254), (66, 311140), (88, 233355), (94, 218460), (110, 186684), (120, 171127), (132, 155570), (141, 145640), (165, 124456), (188, 109230), (220, 93342), (235, 87384), (264, 77785), (282, 72820), (330, 62228), (331, 62040), (376, 54615), (440, 46671), (470, 43692), (517, 39720), (564, 36410), (660, 31114), (662, 31020), (705, 29128), (940, 21846), (993, 20680), (1034, 19860), (1128, 18205), (1320, 15557), (1324, 15510), (1410, 14564), (1551, 13240), (1655, 12408), (1880, 10923), (1986, 10340), (2068, 9930), (2585, 7944), (2648, 7755), (2820, 7282), (3102, 6620), (3310, 6204), (3641, 5640), (3972, 5170), (4136, 4965)]