21130920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{743}}^1$

素因数の和:839

約数の個数: 96

約数和(自身を含む): 69638400

約数和(自身を除く): 48507480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 79, 90, 120, 158, 180, 237, 316, 360, 395, 474, 632, 711, 743, 790, 948, 1185, 1422, 1486, 1580, 1896, 2229, 2370, 2844, 2972, 3160, 3555, 3715, 4458, 4740, 5688, 5944, 6687, 7110, 7430, 8916, 9480, 11145, 13374, 14220, 14860, 17832, 22290, 26748, 28440, 29720, 33435, 44580, 53496, 58697, 66870, 89160, 117394, 133740, 176091, 234788, 267480, 293485, 352182, 469576, 528273, 586970, 704364, 880455, 1056546, 1173940, 1408728, 1760910, 2113092, 2347880, 2641365, 3521820, 4226184, 5282730, 7043640, 10565460, 21130920]

約数ペア:

[(1, 21130920), (2, 10565460), (3, 7043640), (4, 5282730), (5, 4226184), (6, 3521820), (8, 2641365), (9, 2347880), (10, 2113092), (12, 1760910), (15, 1408728), (18, 1173940), (20, 1056546), (24, 880455), (30, 704364), (36, 586970), (40, 528273), (45, 469576), (60, 352182), (72, 293485), (79, 267480), (90, 234788), (120, 176091), (158, 133740), (180, 117394), (237, 89160), (316, 66870), (360, 58697), (395, 53496), (474, 44580), (632, 33435), (711, 29720), (743, 28440), (790, 26748), (948, 22290), (1185, 17832), (1422, 14860), (1486, 14220), (1580, 13374), (1896, 11145), (2229, 9480), (2370, 8916), (2844, 7430), (2972, 7110), (3160, 6687), (3555, 5944), (3715, 5688), (4458, 4740)]