205990290

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1$

素因数の和:470

約数の個数: 160

約数和(自身を含む): 615764160

約数和(自身を除く): 409773870

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 27, 30, 33, 45, 54, 55, 61, 66, 81, 90, 99, 110, 122, 135, 162, 165, 183, 198, 270, 297, 305, 330, 366, 379, 405, 495, 549, 594, 610, 671, 758, 810, 891, 915, 990, 1098, 1137, 1342, 1485, 1647, 1782, 1830, 1895, 2013, 2274, 2745, 2970, 3294, 3355, 3411, 3790, 4026, 4169, 4455, 4941, 5490, 5685, 6039, 6710, 6822, 8235, 8338, 8910, 9882, 10065, 10233, 11370, 12078, 12507, 16470, 17055, 18117, 20130, 20466, 20845, 23119, 24705, 25014, 30195, 30699, 34110, 36234, 37521, 41690, 46238, 49410, 51165, 54351, 60390, 61398, 62535, 69357, 75042, 90585, 102330, 108702, 112563, 115595, 125070, 138714, 153495, 181170, 187605, 208071, 225126, 231190, 254309, 271755, 306990, 337689, 346785, 375210, 416142, 508618, 543510, 562815, 624213, 675378, 693570, 762927, 1040355, 1125630, 1248426, 1271545, 1525854, 1688445, 1872639, 2080710, 2288781, 2543090, 3121065, 3376890, 3745278, 3814635, 4577562, 6242130, 6866343, 7629270, 9363195, 11443905, 13732686, 18726390, 20599029, 22887810, 34331715, 41198058, 68663430, 102995145, 205990290]

約数ペア:

[(1, 205990290), (2, 102995145), (3, 68663430), (5, 41198058), (6, 34331715), (9, 22887810), (10, 20599029), (11, 18726390), (15, 13732686), (18, 11443905), (22, 9363195), (27, 7629270), (30, 6866343), (33, 6242130), (45, 4577562), (54, 3814635), (55, 3745278), (61, 3376890), (66, 3121065), (81, 2543090), (90, 2288781), (99, 2080710), (110, 1872639), (122, 1688445), (135, 1525854), (162, 1271545), (165, 1248426), (183, 1125630), (198, 1040355), (270, 762927), (297, 693570), (305, 675378), (330, 624213), (366, 562815), (379, 543510), (405, 508618), (495, 416142), (549, 375210), (594, 346785), (610, 337689), (671, 306990), (758, 271755), (810, 254309), (891, 231190), (915, 225126), (990, 208071), (1098, 187605), (1137, 181170), (1342, 153495), (1485, 138714), (1647, 125070), (1782, 115595), (1830, 112563), (1895, 108702), (2013, 102330), (2274, 90585), (2745, 75042), (2970, 69357), (3294, 62535), (3355, 61398), (3411, 60390), (3790, 54351), (4026, 51165), (4169, 49410), (4455, 46238), (4941, 41690), (5490, 37521), (5685, 36234), (6039, 34110), (6710, 30699), (6822, 30195), (8235, 25014), (8338, 24705), (8910, 23119), (9882, 20845), (10065, 20466), (10233, 20130), (11370, 18117), (12078, 17055), (12507, 16470)]