261756560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:433

約数の個数: 160

約数和(自身を含む): 707954688

約数和(自身を除く): 446198128

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 31, 40, 46, 52, 62, 65, 80, 92, 104, 115, 124, 130, 155, 184, 208, 230, 248, 260, 299, 310, 353, 368, 403, 460, 496, 520, 598, 620, 706, 713, 806, 920, 1040, 1196, 1240, 1412, 1426, 1495, 1612, 1765, 1840, 2015, 2392, 2480, 2824, 2852, 2990, 3224, 3530, 3565, 4030, 4589, 4784, 5648, 5704, 5980, 6448, 7060, 7130, 8060, 8119, 9178, 9269, 10943, 11408, 11960, 14120, 14260, 16120, 16238, 18356, 18538, 21886, 22945, 23920, 28240, 28520, 32240, 32476, 36712, 37076, 40595, 43772, 45890, 46345, 54715, 57040, 64952, 73424, 74152, 81190, 87544, 91780, 92690, 105547, 109430, 129904, 142259, 148304, 162380, 175088, 183560, 185380, 211094, 218860, 251689, 284518, 324760, 367120, 370760, 422188, 437720, 503378, 527735, 569036, 649520, 711295, 741520, 844376, 875440, 1006756, 1055470, 1138072, 1258445, 1422590, 1688752, 2013512, 2110940, 2276144, 2516890, 2845180, 3271957, 4027024, 4221880, 5033780, 5690360, 6543914, 8443760, 10067560, 11380720, 13087828, 16359785, 20135120, 26175656, 32719570, 52351312, 65439140, 130878280, 261756560]

約数ペア:

[(1, 261756560), (2, 130878280), (4, 65439140), (5, 52351312), (8, 32719570), (10, 26175656), (13, 20135120), (16, 16359785), (20, 13087828), (23, 11380720), (26, 10067560), (31, 8443760), (40, 6543914), (46, 5690360), (52, 5033780), (62, 4221880), (65, 4027024), (80, 3271957), (92, 2845180), (104, 2516890), (115, 2276144), (124, 2110940), (130, 2013512), (155, 1688752), (184, 1422590), (208, 1258445), (230, 1138072), (248, 1055470), (260, 1006756), (299, 875440), (310, 844376), (353, 741520), (368, 711295), (403, 649520), (460, 569036), (496, 527735), (520, 503378), (598, 437720), (620, 422188), (706, 370760), (713, 367120), (806, 324760), (920, 284518), (1040, 251689), (1196, 218860), (1240, 211094), (1412, 185380), (1426, 183560), (1495, 175088), (1612, 162380), (1765, 148304), (1840, 142259), (2015, 129904), (2392, 109430), (2480, 105547), (2824, 92690), (2852, 91780), (2990, 87544), (3224, 81190), (3530, 74152), (3565, 73424), (4030, 64952), (4589, 57040), (4784, 54715), (5648, 46345), (5704, 45890), (5980, 43772), (6448, 40595), (7060, 37076), (7130, 36712), (8060, 32476), (8119, 32240), (9178, 28520), (9269, 28240), (10943, 23920), (11408, 22945), (11960, 21886), (14120, 18538), (14260, 18356), (16120, 16238)]