21995565720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{28057}}^1$

素因数の和:28257

約数の個数: 128

約数和(自身を含む): 67877913600

約数和(自身を除く): 45882347880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 47, 60, 94, 120, 139, 141, 188, 235, 278, 282, 376, 417, 470, 556, 564, 695, 705, 834, 940, 1112, 1128, 1390, 1410, 1668, 1880, 2085, 2780, 2820, 3336, 4170, 5560, 5640, 6533, 8340, 13066, 16680, 19599, 26132, 28057, 32665, 39198, 52264, 56114, 65330, 78396, 84171, 97995, 112228, 130660, 140285, 156792, 168342, 195990, 224456, 261320, 280570, 336684, 391980, 420855, 561140, 673368, 783960, 841710, 1122280, 1318679, 1683420, 2637358, 3366840, 3899923, 3956037, 5274716, 6593395, 7799846, 7912074, 10549432, 11699769, 13186790, 15599692, 15824148, 19499615, 19780185, 23399538, 26373580, 31199384, 31648296, 38999230, 39560370, 46799076, 52747160, 58498845, 77998460, 79120740, 93598152, 116997690, 155996920, 158241480, 183296381, 233995380, 366592762, 467990760, 549889143, 733185524, 916481905, 1099778286, 1466371048, 1832963810, 2199556572, 2749445715, 3665927620, 4399113144, 5498891430, 7331855240, 10997782860, 21995565720]

約数ペア:

[(1, 21995565720), (2, 10997782860), (3, 7331855240), (4, 5498891430), (5, 4399113144), (6, 3665927620), (8, 2749445715), (10, 2199556572), (12, 1832963810), (15, 1466371048), (20, 1099778286), (24, 916481905), (30, 733185524), (40, 549889143), (47, 467990760), (60, 366592762), (94, 233995380), (120, 183296381), (139, 158241480), (141, 155996920), (188, 116997690), (235, 93598152), (278, 79120740), (282, 77998460), (376, 58498845), (417, 52747160), (470, 46799076), (556, 39560370), (564, 38999230), (695, 31648296), (705, 31199384), (834, 26373580), (940, 23399538), (1112, 19780185), (1128, 19499615), (1390, 15824148), (1410, 15599692), (1668, 13186790), (1880, 11699769), (2085, 10549432), (2780, 7912074), (2820, 7799846), (3336, 6593395), (4170, 5274716), (5560, 3956037), (5640, 3899923), (6533, 3366840), (8340, 2637358), (13066, 1683420), (16680, 1318679), (19599, 1122280), (26132, 841710), (28057, 783960), (32665, 673368), (39198, 561140), (52264, 420855), (56114, 391980), (65330, 336684), (78396, 280570), (84171, 261320), (97995, 224456), (112228, 195990), (130660, 168342), (140285, 156792)]