261228520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{607}}^1$

素因数の和:707

約数の個数: 128

約数和(自身を含む): 709171200

約数和(自身を除く): 447942680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 53, 56, 58, 70, 106, 116, 140, 145, 203, 212, 232, 265, 280, 290, 371, 406, 424, 530, 580, 607, 742, 812, 1015, 1060, 1160, 1214, 1484, 1537, 1624, 1855, 2030, 2120, 2428, 2968, 3035, 3074, 3710, 4060, 4249, 4856, 6070, 6148, 7420, 7685, 8120, 8498, 10759, 12140, 12296, 14840, 15370, 16996, 17603, 21245, 21518, 24280, 30740, 32171, 33992, 35206, 42490, 43036, 53795, 61480, 64342, 70412, 84980, 86072, 88015, 107590, 123221, 128684, 140824, 160855, 169960, 176030, 215180, 225197, 246442, 257368, 321710, 352060, 430360, 450394, 492884, 616105, 643420, 704120, 900788, 932959, 985768, 1125985, 1232210, 1286840, 1801576, 1865918, 2251970, 2464420, 3731836, 4503940, 4664795, 4928840, 6530713, 7463672, 9007880, 9329590, 13061426, 18659180, 26122852, 32653565, 37318360, 52245704, 65307130, 130614260, 261228520]

約数ペア:

[(1, 261228520), (2, 130614260), (4, 65307130), (5, 52245704), (7, 37318360), (8, 32653565), (10, 26122852), (14, 18659180), (20, 13061426), (28, 9329590), (29, 9007880), (35, 7463672), (40, 6530713), (53, 4928840), (56, 4664795), (58, 4503940), (70, 3731836), (106, 2464420), (116, 2251970), (140, 1865918), (145, 1801576), (203, 1286840), (212, 1232210), (232, 1125985), (265, 985768), (280, 932959), (290, 900788), (371, 704120), (406, 643420), (424, 616105), (530, 492884), (580, 450394), (607, 430360), (742, 352060), (812, 321710), (1015, 257368), (1060, 246442), (1160, 225197), (1214, 215180), (1484, 176030), (1537, 169960), (1624, 160855), (1855, 140824), (2030, 128684), (2120, 123221), (2428, 107590), (2968, 88015), (3035, 86072), (3074, 84980), (3710, 70412), (4060, 64342), (4249, 61480), (4856, 53795), (6070, 43036), (6148, 42490), (7420, 35206), (7685, 33992), (8120, 32171), (8498, 30740), (10759, 24280), (12140, 21518), (12296, 21245), (14840, 17603), (15370, 16996)]