256295312

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1709}}^1$

素因数の和:1840

約数の個数: 80

約数和(自身を含む): 617460480

約数和(自身を除く): 361165168

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 103, 104, 112, 182, 206, 208, 364, 412, 721, 728, 824, 1339, 1442, 1456, 1648, 1709, 2678, 2884, 3418, 5356, 5768, 6836, 9373, 10712, 11536, 11963, 13672, 18746, 21424, 22217, 23926, 27344, 37492, 44434, 47852, 74984, 88868, 95704, 149968, 155519, 176027, 177736, 191408, 311038, 352054, 355472, 622076, 704108, 1232189, 1244152, 1408216, 2288351, 2464378, 2488304, 2816432, 4576702, 4928756, 9153404, 9857512, 16018457, 18306808, 19715024, 32036914, 36613616, 64073828, 128147656, 256295312]

約数ペア:

[(1, 256295312), (2, 128147656), (4, 64073828), (7, 36613616), (8, 32036914), (13, 19715024), (14, 18306808), (16, 16018457), (26, 9857512), (28, 9153404), (52, 4928756), (56, 4576702), (91, 2816432), (103, 2488304), (104, 2464378), (112, 2288351), (182, 1408216), (206, 1244152), (208, 1232189), (364, 704108), (412, 622076), (721, 355472), (728, 352054), (824, 311038), (1339, 191408), (1442, 177736), (1456, 176027), (1648, 155519), (1709, 149968), (2678, 95704), (2884, 88868), (3418, 74984), (5356, 47852), (5768, 44434), (6836, 37492), (9373, 27344), (10712, 23926), (11536, 22217), (11963, 21424), (13672, 18746)]