21414140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:195

約数の個数: 96

約数和(自身を含む): 53222400

約数和(自身を除く): 31808260

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 47, 55, 76, 94, 95, 109, 110, 188, 190, 209, 218, 220, 235, 380, 418, 436, 470, 517, 545, 836, 893, 940, 1034, 1045, 1090, 1199, 1786, 2068, 2071, 2090, 2180, 2398, 2585, 3572, 4142, 4180, 4465, 4796, 5123, 5170, 5995, 8284, 8930, 9823, 10246, 10340, 10355, 11990, 17860, 19646, 20492, 20710, 22781, 23980, 25615, 39292, 41420, 45562, 49115, 51230, 56353, 91124, 97337, 98230, 102460, 112706, 113905, 194674, 196460, 225412, 227810, 281765, 389348, 455620, 486685, 563530, 973370, 1070707, 1127060, 1946740, 2141414, 4282828, 5353535, 10707070, 21414140]

約数ペア:

[(1, 21414140), (2, 10707070), (4, 5353535), (5, 4282828), (10, 2141414), (11, 1946740), (19, 1127060), (20, 1070707), (22, 973370), (38, 563530), (44, 486685), (47, 455620), (55, 389348), (76, 281765), (94, 227810), (95, 225412), (109, 196460), (110, 194674), (188, 113905), (190, 112706), (209, 102460), (218, 98230), (220, 97337), (235, 91124), (380, 56353), (418, 51230), (436, 49115), (470, 45562), (517, 41420), (545, 39292), (836, 25615), (893, 23980), (940, 22781), (1034, 20710), (1045, 20492), (1090, 19646), (1199, 17860), (1786, 11990), (2068, 10355), (2071, 10340), (2090, 10246), (2180, 9823), (2398, 8930), (2585, 8284), (3572, 5995), (4142, 5170), (4180, 5123), (4465, 4796)]