21491340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{467}}^1$

素因数の和:551

約数の個数: 96

約数和(自身を含む): 66044160

約数和(自身を除く): 44552820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 59, 60, 65, 78, 118, 130, 156, 177, 195, 236, 260, 295, 354, 390, 467, 590, 708, 767, 780, 885, 934, 1180, 1401, 1534, 1770, 1868, 2301, 2335, 2802, 3068, 3540, 3835, 4602, 4670, 5604, 6071, 7005, 7670, 9204, 9340, 11505, 12142, 14010, 15340, 18213, 23010, 24284, 27553, 28020, 30355, 36426, 46020, 55106, 60710, 72852, 82659, 91065, 110212, 121420, 137765, 165318, 182130, 275530, 330636, 358189, 364260, 413295, 551060, 716378, 826590, 1074567, 1432756, 1653180, 1790945, 2149134, 3581890, 4298268, 5372835, 7163780, 10745670, 21491340]

約数ペア:

[(1, 21491340), (2, 10745670), (3, 7163780), (4, 5372835), (5, 4298268), (6, 3581890), (10, 2149134), (12, 1790945), (13, 1653180), (15, 1432756), (20, 1074567), (26, 826590), (30, 716378), (39, 551060), (52, 413295), (59, 364260), (60, 358189), (65, 330636), (78, 275530), (118, 182130), (130, 165318), (156, 137765), (177, 121420), (195, 110212), (236, 91065), (260, 82659), (295, 72852), (354, 60710), (390, 55106), (467, 46020), (590, 36426), (708, 30355), (767, 28020), (780, 27553), (885, 24284), (934, 23010), (1180, 18213), (1401, 15340), (1534, 14010), (1770, 12142), (1868, 11505), (2301, 9340), (2335, 9204), (2802, 7670), (3068, 7005), (3540, 6071), (3835, 5604), (4602, 4670)]