257485020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{379}}^1$

素因数の和:484

約数の個数: 144

約数和(自身を含む): 794424960

約数和(自身を除く): 536939940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 67, 78, 130, 134, 156, 169, 195, 201, 260, 268, 335, 338, 379, 390, 402, 507, 670, 676, 758, 780, 804, 845, 871, 1005, 1014, 1137, 1340, 1516, 1690, 1742, 1895, 2010, 2028, 2274, 2535, 2613, 3380, 3484, 3790, 4020, 4355, 4548, 4927, 5070, 5226, 5685, 7580, 8710, 9854, 10140, 10452, 11323, 11370, 13065, 14781, 17420, 19708, 22646, 22740, 24635, 25393, 26130, 29562, 33969, 45292, 49270, 50786, 52260, 56615, 59124, 64051, 67938, 73905, 76179, 98540, 101572, 113230, 126965, 128102, 135876, 147810, 152358, 169845, 192153, 226460, 253930, 256204, 295620, 304716, 320255, 330109, 339690, 380895, 384306, 507860, 640510, 660218, 679380, 761790, 768612, 960765, 990327, 1281020, 1320436, 1523580, 1650545, 1921530, 1980654, 3301090, 3843060, 3961308, 4291417, 4951635, 6602180, 8582834, 9903270, 12874251, 17165668, 19806540, 21457085, 25748502, 42914170, 51497004, 64371255, 85828340, 128742510, 257485020]

約数ペア:

[(1, 257485020), (2, 128742510), (3, 85828340), (4, 64371255), (5, 51497004), (6, 42914170), (10, 25748502), (12, 21457085), (13, 19806540), (15, 17165668), (20, 12874251), (26, 9903270), (30, 8582834), (39, 6602180), (52, 4951635), (60, 4291417), (65, 3961308), (67, 3843060), (78, 3301090), (130, 1980654), (134, 1921530), (156, 1650545), (169, 1523580), (195, 1320436), (201, 1281020), (260, 990327), (268, 960765), (335, 768612), (338, 761790), (379, 679380), (390, 660218), (402, 640510), (507, 507860), (670, 384306), (676, 380895), (758, 339690), (780, 330109), (804, 320255), (845, 304716), (871, 295620), (1005, 256204), (1014, 253930), (1137, 226460), (1340, 192153), (1516, 169845), (1690, 152358), (1742, 147810), (1895, 135876), (2010, 128102), (2028, 126965), (2274, 113230), (2535, 101572), (2613, 98540), (3380, 76179), (3484, 73905), (3790, 67938), (4020, 64051), (4355, 59124), (4548, 56615), (4927, 52260), (5070, 50786), (5226, 49270), (5685, 45292), (7580, 33969), (8710, 29562), (9854, 26130), (10140, 25393), (10452, 24635), (11323, 22740), (11370, 22646), (13065, 19708), (14781, 17420)]