81925480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:419

約数の個数: 128

約数和(自身を含む): 230791680

約数和(自身を除く): 148866200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 71, 91, 104, 130, 140, 142, 182, 260, 280, 284, 317, 355, 364, 455, 497, 520, 568, 634, 710, 728, 910, 923, 994, 1268, 1420, 1585, 1820, 1846, 1988, 2219, 2485, 2536, 2840, 3170, 3640, 3692, 3976, 4121, 4438, 4615, 4970, 6340, 6461, 7384, 8242, 8876, 9230, 9940, 11095, 12680, 12922, 16484, 17752, 18460, 19880, 20605, 22190, 22507, 25844, 28847, 32305, 32968, 36920, 41210, 44380, 45014, 51688, 57694, 64610, 82420, 88760, 90028, 112535, 115388, 129220, 144235, 157549, 164840, 180056, 225070, 230776, 258440, 288470, 292591, 315098, 450140, 576940, 585182, 630196, 787745, 900280, 1153880, 1170364, 1260392, 1462955, 1575490, 2048137, 2340728, 2925910, 3150980, 4096274, 5851820, 6301960, 8192548, 10240685, 11703640, 16385096, 20481370, 40962740, 81925480]

約数ペア:

[(1, 81925480), (2, 40962740), (4, 20481370), (5, 16385096), (7, 11703640), (8, 10240685), (10, 8192548), (13, 6301960), (14, 5851820), (20, 4096274), (26, 3150980), (28, 2925910), (35, 2340728), (40, 2048137), (52, 1575490), (56, 1462955), (65, 1260392), (70, 1170364), (71, 1153880), (91, 900280), (104, 787745), (130, 630196), (140, 585182), (142, 576940), (182, 450140), (260, 315098), (280, 292591), (284, 288470), (317, 258440), (355, 230776), (364, 225070), (455, 180056), (497, 164840), (520, 157549), (568, 144235), (634, 129220), (710, 115388), (728, 112535), (910, 90028), (923, 88760), (994, 82420), (1268, 64610), (1420, 57694), (1585, 51688), (1820, 45014), (1846, 44380), (1988, 41210), (2219, 36920), (2485, 32968), (2536, 32305), (2840, 28847), (3170, 25844), (3640, 22507), (3692, 22190), (3976, 20605), (4121, 19880), (4438, 18460), (4615, 17752), (4970, 16484), (6340, 12922), (6461, 12680), (7384, 11095), (8242, 9940), (8876, 9230)]