20889180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:220

約数の個数: 144

約数和(自身を含む): 69713280

約数和(自身を除く): 48824100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 79, 90, 113, 117, 130, 156, 158, 180, 195, 226, 234, 237, 260, 316, 339, 390, 395, 452, 468, 474, 565, 585, 678, 711, 780, 790, 948, 1017, 1027, 1130, 1170, 1185, 1356, 1422, 1469, 1580, 1695, 2034, 2054, 2260, 2340, 2370, 2844, 2938, 3081, 3390, 3555, 4068, 4108, 4407, 4740, 5085, 5135, 5876, 6162, 6780, 7110, 7345, 8814, 8927, 9243, 10170, 10270, 12324, 13221, 14220, 14690, 15405, 17628, 17854, 18486, 20340, 20540, 22035, 26442, 26781, 29380, 30810, 35708, 36972, 44070, 44635, 46215, 52884, 53562, 61620, 66105, 80343, 88140, 89270, 92430, 107124, 116051, 132210, 133905, 160686, 178540, 184860, 232102, 264420, 267810, 321372, 348153, 401715, 464204, 535620, 580255, 696306, 803430, 1044459, 1160510, 1392612, 1606860, 1740765, 2088918, 2321020, 3481530, 4177836, 5222295, 6963060, 10444590, 20889180]

約数ペア:

[(1, 20889180), (2, 10444590), (3, 6963060), (4, 5222295), (5, 4177836), (6, 3481530), (9, 2321020), (10, 2088918), (12, 1740765), (13, 1606860), (15, 1392612), (18, 1160510), (20, 1044459), (26, 803430), (30, 696306), (36, 580255), (39, 535620), (45, 464204), (52, 401715), (60, 348153), (65, 321372), (78, 267810), (79, 264420), (90, 232102), (113, 184860), (117, 178540), (130, 160686), (156, 133905), (158, 132210), (180, 116051), (195, 107124), (226, 92430), (234, 89270), (237, 88140), (260, 80343), (316, 66105), (339, 61620), (390, 53562), (395, 52884), (452, 46215), (468, 44635), (474, 44070), (565, 36972), (585, 35708), (678, 30810), (711, 29380), (780, 26781), (790, 26442), (948, 22035), (1017, 20540), (1027, 20340), (1130, 18486), (1170, 17854), (1185, 17628), (1356, 15405), (1422, 14690), (1469, 14220), (1580, 13221), (1695, 12324), (2034, 10270), (2054, 10170), (2260, 9243), (2340, 8927), (2370, 8814), (2844, 7345), (2938, 7110), (3081, 6780), (3390, 6162), (3555, 5876), (4068, 5135), (4108, 5085), (4407, 4740)]