28879240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:159

約数の個数: 128

約数和(自身を含む): 76608000

約数和(自身を除く): 47728760

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 37, 38, 40, 52, 65, 74, 76, 79, 95, 104, 130, 148, 152, 158, 185, 190, 247, 260, 296, 316, 370, 380, 395, 481, 494, 520, 632, 703, 740, 760, 790, 962, 988, 1027, 1235, 1406, 1480, 1501, 1580, 1924, 1976, 2054, 2405, 2470, 2812, 2923, 3002, 3160, 3515, 3848, 4108, 4810, 4940, 5135, 5624, 5846, 6004, 7030, 7505, 8216, 9139, 9620, 9880, 10270, 11692, 12008, 14060, 14615, 15010, 18278, 19240, 19513, 20540, 23384, 28120, 29230, 30020, 36556, 37999, 39026, 41080, 45695, 55537, 58460, 60040, 73112, 75998, 78052, 91390, 97565, 111074, 116920, 151996, 156104, 182780, 189995, 195130, 222148, 277685, 303992, 365560, 379990, 390260, 444296, 555370, 721981, 759980, 780520, 1110740, 1443962, 1519960, 2221480, 2887924, 3609905, 5775848, 7219810, 14439620, 28879240]

約数ペア:

[(1, 28879240), (2, 14439620), (4, 7219810), (5, 5775848), (8, 3609905), (10, 2887924), (13, 2221480), (19, 1519960), (20, 1443962), (26, 1110740), (37, 780520), (38, 759980), (40, 721981), (52, 555370), (65, 444296), (74, 390260), (76, 379990), (79, 365560), (95, 303992), (104, 277685), (130, 222148), (148, 195130), (152, 189995), (158, 182780), (185, 156104), (190, 151996), (247, 116920), (260, 111074), (296, 97565), (316, 91390), (370, 78052), (380, 75998), (395, 73112), (481, 60040), (494, 58460), (520, 55537), (632, 45695), (703, 41080), (740, 39026), (760, 37999), (790, 36556), (962, 30020), (988, 29230), (1027, 28120), (1235, 23384), (1406, 20540), (1480, 19513), (1501, 19240), (1580, 18278), (1924, 15010), (1976, 14615), (2054, 14060), (2405, 12008), (2470, 11692), (2812, 10270), (2923, 9880), (3002, 9620), (3160, 9139), (3515, 8216), (3848, 7505), (4108, 7030), (4810, 6004), (4940, 5846), (5135, 5624)]