421028920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{277}}^1$

素因数の和:417

約数の個数: 128

約数和(自身を含む): 1064851200

約数和(自身を除く): 643822280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 79, 104, 130, 148, 158, 185, 260, 277, 296, 316, 370, 395, 481, 520, 554, 632, 740, 790, 962, 1027, 1108, 1385, 1480, 1580, 1924, 2054, 2216, 2405, 2770, 2923, 3160, 3601, 3848, 4108, 4810, 5135, 5540, 5846, 7202, 8216, 9620, 10249, 10270, 11080, 11692, 14404, 14615, 18005, 19240, 20498, 20540, 21883, 23384, 28808, 29230, 36010, 37999, 40996, 41080, 43766, 51245, 58460, 72020, 75998, 81992, 87532, 102490, 109415, 116920, 133237, 144040, 151996, 175064, 189995, 204980, 218830, 266474, 284479, 303992, 379990, 409960, 437660, 532948, 568958, 666185, 759980, 809671, 875320, 1065896, 1137916, 1332370, 1422395, 1519960, 1619342, 2275832, 2664740, 2844790, 3238684, 4048355, 5329480, 5689580, 6477368, 8096710, 10525723, 11379160, 16193420, 21051446, 32386840, 42102892, 52628615, 84205784, 105257230, 210514460, 421028920]

約数ペア:

[(1, 421028920), (2, 210514460), (4, 105257230), (5, 84205784), (8, 52628615), (10, 42102892), (13, 32386840), (20, 21051446), (26, 16193420), (37, 11379160), (40, 10525723), (52, 8096710), (65, 6477368), (74, 5689580), (79, 5329480), (104, 4048355), (130, 3238684), (148, 2844790), (158, 2664740), (185, 2275832), (260, 1619342), (277, 1519960), (296, 1422395), (316, 1332370), (370, 1137916), (395, 1065896), (481, 875320), (520, 809671), (554, 759980), (632, 666185), (740, 568958), (790, 532948), (962, 437660), (1027, 409960), (1108, 379990), (1385, 303992), (1480, 284479), (1580, 266474), (1924, 218830), (2054, 204980), (2216, 189995), (2405, 175064), (2770, 151996), (2923, 144040), (3160, 133237), (3601, 116920), (3848, 109415), (4108, 102490), (4810, 87532), (5135, 81992), (5540, 75998), (5846, 72020), (7202, 58460), (8216, 51245), (9620, 43766), (10249, 41080), (10270, 40996), (11080, 37999), (11692, 36010), (14404, 29230), (14615, 28808), (18005, 23384), (19240, 21883), (20498, 20540)]