28673840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{349}}^1$

素因数の和:454

約数の個数: 80

約数和(自身を含む): 72912000

約数和(自身を除く): 44238160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 79, 80, 104, 130, 158, 208, 260, 316, 349, 395, 520, 632, 698, 790, 1027, 1040, 1264, 1396, 1580, 1745, 2054, 2792, 3160, 3490, 4108, 4537, 5135, 5584, 6320, 6980, 8216, 9074, 10270, 13960, 16432, 18148, 20540, 22685, 27571, 27920, 36296, 41080, 45370, 55142, 72592, 82160, 90740, 110284, 137855, 181480, 220568, 275710, 358423, 362960, 441136, 551420, 716846, 1102840, 1433692, 1792115, 2205680, 2867384, 3584230, 5734768, 7168460, 14336920, 28673840]

約数ペア:

[(1, 28673840), (2, 14336920), (4, 7168460), (5, 5734768), (8, 3584230), (10, 2867384), (13, 2205680), (16, 1792115), (20, 1433692), (26, 1102840), (40, 716846), (52, 551420), (65, 441136), (79, 362960), (80, 358423), (104, 275710), (130, 220568), (158, 181480), (208, 137855), (260, 110284), (316, 90740), (349, 82160), (395, 72592), (520, 55142), (632, 45370), (698, 41080), (790, 36296), (1027, 27920), (1040, 27571), (1264, 22685), (1396, 20540), (1580, 18148), (1745, 16432), (2054, 13960), (2792, 10270), (3160, 9074), (3490, 8216), (4108, 6980), (4537, 6320), (5135, 5584)]