257127720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{523}}^1$

素因数の和:795

約数の個数: 128

約数和(自身を含む): 821715840

約数和(自身を除く): 564588120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 241, 255, 340, 408, 482, 510, 523, 680, 723, 964, 1020, 1046, 1205, 1446, 1569, 1928, 2040, 2092, 2410, 2615, 2892, 3138, 3615, 4097, 4184, 4820, 5230, 5784, 6276, 7230, 7845, 8194, 8891, 9640, 10460, 12291, 12552, 14460, 15690, 16388, 17782, 20485, 20920, 24582, 26673, 28920, 31380, 32776, 35564, 40970, 44455, 49164, 53346, 61455, 62760, 71128, 81940, 88910, 98328, 106692, 122910, 126043, 133365, 163880, 177820, 213384, 245820, 252086, 266730, 355640, 378129, 491640, 504172, 533460, 630215, 756258, 1008344, 1066920, 1260430, 1512516, 1890645, 2142731, 2520860, 3025032, 3781290, 4285462, 5041720, 6428193, 7562580, 8570924, 10713655, 12856386, 15125160, 17141848, 21427310, 25712772, 32140965, 42854620, 51425544, 64281930, 85709240, 128563860, 257127720]

約数ペア:

[(1, 257127720), (2, 128563860), (3, 85709240), (4, 64281930), (5, 51425544), (6, 42854620), (8, 32140965), (10, 25712772), (12, 21427310), (15, 17141848), (17, 15125160), (20, 12856386), (24, 10713655), (30, 8570924), (34, 7562580), (40, 6428193), (51, 5041720), (60, 4285462), (68, 3781290), (85, 3025032), (102, 2520860), (120, 2142731), (136, 1890645), (170, 1512516), (204, 1260430), (241, 1066920), (255, 1008344), (340, 756258), (408, 630215), (482, 533460), (510, 504172), (523, 491640), (680, 378129), (723, 355640), (964, 266730), (1020, 252086), (1046, 245820), (1205, 213384), (1446, 177820), (1569, 163880), (1928, 133365), (2040, 126043), (2092, 122910), (2410, 106692), (2615, 98328), (2892, 88910), (3138, 81940), (3615, 71128), (4097, 62760), (4184, 61455), (4820, 53346), (5230, 49164), (5784, 44455), (6276, 40970), (7230, 35564), (7845, 32776), (8194, 31380), (8891, 28920), (9640, 26673), (10460, 24582), (12291, 20920), (12552, 20485), (14460, 17782), (15690, 16388)]