20977660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:187

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 31277060

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 71, 79, 85, 110, 142, 158, 170, 187, 220, 284, 316, 340, 355, 374, 395, 710, 748, 781, 790, 869, 935, 1207, 1343, 1420, 1562, 1580, 1738, 1870, 2414, 2686, 3124, 3476, 3740, 3905, 4345, 4828, 5372, 5609, 6035, 6715, 7810, 8690, 11218, 12070, 13277, 13430, 14773, 15620, 17380, 22436, 24140, 26554, 26860, 28045, 29546, 53108, 56090, 59092, 61699, 66385, 73865, 95353, 112180, 123398, 132770, 147730, 190706, 246796, 265540, 295460, 308495, 381412, 476765, 616990, 953530, 1048883, 1233980, 1907060, 2097766, 4195532, 5244415, 10488830, 20977660]

約数ペア:

[(1, 20977660), (2, 10488830), (4, 5244415), (5, 4195532), (10, 2097766), (11, 1907060), (17, 1233980), (20, 1048883), (22, 953530), (34, 616990), (44, 476765), (55, 381412), (68, 308495), (71, 295460), (79, 265540), (85, 246796), (110, 190706), (142, 147730), (158, 132770), (170, 123398), (187, 112180), (220, 95353), (284, 73865), (316, 66385), (340, 61699), (355, 59092), (374, 56090), (395, 53108), (710, 29546), (748, 28045), (781, 26860), (790, 26554), (869, 24140), (935, 22436), (1207, 17380), (1343, 15620), (1420, 14773), (1562, 13430), (1580, 13277), (1738, 12070), (1870, 11218), (2414, 8690), (2686, 7810), (3124, 6715), (3476, 6035), (3740, 5609), (3905, 5372), (4345, 4828)]