20030320

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:218

約数の個数: 80

約数和(自身を含む): 49023648

約数和(自身を除く): 28993328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 67, 74, 80, 101, 134, 148, 185, 202, 268, 296, 335, 370, 404, 505, 536, 592, 670, 740, 808, 1010, 1072, 1340, 1480, 1616, 2020, 2479, 2680, 2960, 3737, 4040, 4958, 5360, 6767, 7474, 8080, 9916, 12395, 13534, 14948, 18685, 19832, 24790, 27068, 29896, 33835, 37370, 39664, 49580, 54136, 59792, 67670, 74740, 99160, 108272, 135340, 149480, 198320, 250379, 270680, 298960, 500758, 541360, 1001516, 1251895, 2003032, 2503790, 4006064, 5007580, 10015160, 20030320]

約数ペア:

[(1, 20030320), (2, 10015160), (4, 5007580), (5, 4006064), (8, 2503790), (10, 2003032), (16, 1251895), (20, 1001516), (37, 541360), (40, 500758), (67, 298960), (74, 270680), (80, 250379), (101, 198320), (134, 149480), (148, 135340), (185, 108272), (202, 99160), (268, 74740), (296, 67670), (335, 59792), (370, 54136), (404, 49580), (505, 39664), (536, 37370), (592, 33835), (670, 29896), (740, 27068), (808, 24790), (1010, 19832), (1072, 18685), (1340, 14948), (1480, 13534), (1616, 12395), (2020, 9916), (2479, 8080), (2680, 7474), (2960, 6767), (3737, 5360), (4040, 4958)]