256111460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^2$

素因数の和:162

約数の個数: 144

約数和(自身を含む): 655216128

約数和(自身を除く): 399104668

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 31, 34, 44, 47, 55, 62, 68, 85, 94, 110, 124, 155, 170, 187, 188, 220, 235, 310, 340, 341, 374, 470, 517, 527, 620, 682, 748, 799, 935, 940, 1034, 1054, 1364, 1457, 1598, 1705, 1870, 2068, 2108, 2209, 2585, 2635, 2914, 3196, 3410, 3740, 3995, 4418, 5170, 5270, 5797, 5828, 6820, 7285, 7990, 8789, 8836, 10340, 10540, 11045, 11594, 14570, 15980, 16027, 17578, 22090, 23188, 24299, 24769, 28985, 29140, 32054, 35156, 37553, 43945, 44180, 48598, 49538, 57970, 64108, 68479, 75106, 80135, 87890, 97196, 99076, 115940, 121495, 123845, 136958, 150212, 160270, 175780, 187765, 242990, 247690, 272459, 273916, 320540, 342395, 375530, 413083, 485980, 495380, 544918, 684790, 751060, 753269, 826166, 1089836, 1164143, 1362295, 1369580, 1506538, 1652332, 2065415, 2328286, 2724590, 3013076, 3766345, 4130830, 4656572, 5449180, 5820715, 7532690, 8261660, 11641430, 12805573, 15065380, 23282860, 25611146, 51222292, 64027865, 128055730, 256111460]

約数ペア:

[(1, 256111460), (2, 128055730), (4, 64027865), (5, 51222292), (10, 25611146), (11, 23282860), (17, 15065380), (20, 12805573), (22, 11641430), (31, 8261660), (34, 7532690), (44, 5820715), (47, 5449180), (55, 4656572), (62, 4130830), (68, 3766345), (85, 3013076), (94, 2724590), (110, 2328286), (124, 2065415), (155, 1652332), (170, 1506538), (187, 1369580), (188, 1362295), (220, 1164143), (235, 1089836), (310, 826166), (340, 753269), (341, 751060), (374, 684790), (470, 544918), (517, 495380), (527, 485980), (620, 413083), (682, 375530), (748, 342395), (799, 320540), (935, 273916), (940, 272459), (1034, 247690), (1054, 242990), (1364, 187765), (1457, 175780), (1598, 160270), (1705, 150212), (1870, 136958), (2068, 123845), (2108, 121495), (2209, 115940), (2585, 99076), (2635, 97196), (2914, 87890), (3196, 80135), (3410, 75106), (3740, 68479), (3995, 64108), (4418, 57970), (5170, 49538), (5270, 48598), (5797, 44180), (5828, 43945), (6820, 37553), (7285, 35156), (7990, 32054), (8789, 29140), (8836, 28985), (10340, 24769), (10540, 24299), (11045, 23188), (11594, 22090), (14570, 17578), (15980, 16027)]