281915816

素因数分解:

$2^3\times 7^4\times {\mathrm{13}}^1\times {\mathrm{1129}}^1$

素因数の和:1176

約数の個数: 80

約数和(自身を含む): 664677300

約数和(自身を除く): 382761484

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 343, 364, 392, 637, 686, 728, 1129, 1274, 1372, 2258, 2401, 2548, 2744, 4459, 4516, 4802, 5096, 7903, 8918, 9032, 9604, 14677, 15806, 17836, 19208, 29354, 31213, 31612, 35672, 55321, 58708, 62426, 63224, 102739, 110642, 117416, 124852, 205478, 221284, 249704, 387247, 410956, 442568, 719173, 774494, 821912, 1438346, 1548988, 2710729, 2876692, 3097976, 5034211, 5421458, 5753384, 10068422, 10842916, 20136844, 21685832, 35239477, 40273688, 70478954, 140957908, 281915816]

約数ペア:

[(1, 281915816), (2, 140957908), (4, 70478954), (7, 40273688), (8, 35239477), (13, 21685832), (14, 20136844), (26, 10842916), (28, 10068422), (49, 5753384), (52, 5421458), (56, 5034211), (91, 3097976), (98, 2876692), (104, 2710729), (182, 1548988), (196, 1438346), (343, 821912), (364, 774494), (392, 719173), (637, 442568), (686, 410956), (728, 387247), (1129, 249704), (1274, 221284), (1372, 205478), (2258, 124852), (2401, 117416), (2548, 110642), (2744, 102739), (4459, 63224), (4516, 62426), (4802, 58708), (5096, 55321), (7903, 35672), (8918, 31612), (9032, 31213), (9604, 29354), (14677, 19208), (15806, 17836)]