21152080

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{151}}^1$

素因数の和:284

約数の個数: 80

約数和(自身を含む): 52925184

約数和(自身を除く): 31773104

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 103, 136, 151, 170, 206, 272, 302, 340, 412, 515, 604, 680, 755, 824, 1030, 1208, 1360, 1510, 1648, 1751, 2060, 2416, 2567, 3020, 3502, 4120, 5134, 6040, 7004, 8240, 8755, 10268, 12080, 12835, 14008, 15553, 17510, 20536, 25670, 28016, 31106, 35020, 41072, 51340, 62212, 70040, 77765, 102680, 124424, 140080, 155530, 205360, 248848, 264401, 311060, 528802, 622120, 1057604, 1244240, 1322005, 2115208, 2644010, 4230416, 5288020, 10576040, 21152080]

約数ペア:

[(1, 21152080), (2, 10576040), (4, 5288020), (5, 4230416), (8, 2644010), (10, 2115208), (16, 1322005), (17, 1244240), (20, 1057604), (34, 622120), (40, 528802), (68, 311060), (80, 264401), (85, 248848), (103, 205360), (136, 155530), (151, 140080), (170, 124424), (206, 102680), (272, 77765), (302, 70040), (340, 62212), (412, 51340), (515, 41072), (604, 35020), (680, 31106), (755, 28016), (824, 25670), (1030, 20536), (1208, 17510), (1360, 15553), (1510, 14008), (1648, 12835), (1751, 12080), (2060, 10268), (2416, 8755), (2567, 8240), (3020, 7004), (3502, 6040), (4120, 5134)]