208821340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{443}}^1$

素因数の和:516

約数の個数: 144

約数和(自身を含む): 565481952

約数和(自身を除く): 356660612

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 37, 49, 52, 65, 70, 74, 91, 98, 130, 140, 148, 182, 185, 196, 245, 259, 260, 364, 370, 443, 455, 481, 490, 518, 637, 740, 886, 910, 962, 980, 1036, 1274, 1295, 1772, 1813, 1820, 1924, 2215, 2405, 2548, 2590, 3101, 3185, 3367, 3626, 4430, 4810, 5180, 5759, 6202, 6370, 6734, 7252, 8860, 9065, 9620, 11518, 12404, 12740, 13468, 15505, 16391, 16835, 18130, 21707, 23036, 23569, 28795, 31010, 32782, 33670, 36260, 40313, 43414, 47138, 57590, 62020, 65564, 67340, 80626, 81955, 86828, 94276, 108535, 114737, 115180, 117845, 161252, 163910, 201565, 213083, 217070, 229474, 235690, 282191, 327820, 403130, 426166, 434140, 458948, 471380, 564382, 573685, 803159, 806260, 852332, 1065415, 1128764, 1147370, 1410955, 1491581, 1606318, 2130830, 2294740, 2821910, 2983162, 3212636, 4015795, 4261660, 5643820, 5966324, 7457905, 8031590, 10441067, 14915810, 16063180, 20882134, 29831620, 41764268, 52205335, 104410670, 208821340]

約数ペア:

[(1, 208821340), (2, 104410670), (4, 52205335), (5, 41764268), (7, 29831620), (10, 20882134), (13, 16063180), (14, 14915810), (20, 10441067), (26, 8031590), (28, 7457905), (35, 5966324), (37, 5643820), (49, 4261660), (52, 4015795), (65, 3212636), (70, 2983162), (74, 2821910), (91, 2294740), (98, 2130830), (130, 1606318), (140, 1491581), (148, 1410955), (182, 1147370), (185, 1128764), (196, 1065415), (245, 852332), (259, 806260), (260, 803159), (364, 573685), (370, 564382), (443, 471380), (455, 458948), (481, 434140), (490, 426166), (518, 403130), (637, 327820), (740, 282191), (886, 235690), (910, 229474), (962, 217070), (980, 213083), (1036, 201565), (1274, 163910), (1295, 161252), (1772, 117845), (1813, 115180), (1820, 114737), (1924, 108535), (2215, 94276), (2405, 86828), (2548, 81955), (2590, 80626), (3101, 67340), (3185, 65564), (3367, 62020), (3626, 57590), (4430, 47138), (4810, 43414), (5180, 40313), (5759, 36260), (6202, 33670), (6370, 32782), (6734, 31010), (7252, 28795), (8860, 23569), (9065, 23036), (9620, 21707), (11518, 18130), (12404, 16835), (12740, 16391), (13468, 15505)]