81612440

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3203}}^1$

素因数の和:3241

約数の個数: 96

約数和(自身を含む): 230111280

約数和(自身を除く): 148498840

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 91, 98, 104, 130, 140, 182, 196, 245, 260, 280, 364, 392, 455, 490, 520, 637, 728, 910, 980, 1274, 1820, 1960, 2548, 3185, 3203, 3640, 5096, 6370, 6406, 12740, 12812, 16015, 22421, 25480, 25624, 32030, 41639, 44842, 64060, 83278, 89684, 112105, 128120, 156947, 166556, 179368, 208195, 224210, 291473, 313894, 333112, 416390, 448420, 582946, 627788, 784735, 832780, 896840, 1165892, 1255576, 1457365, 1569470, 1665560, 2040311, 2331784, 2914730, 3138940, 4080622, 5829460, 6277880, 8161244, 10201555, 11658920, 16322488, 20403110, 40806220, 81612440]

約数ペア:

[(1, 81612440), (2, 40806220), (4, 20403110), (5, 16322488), (7, 11658920), (8, 10201555), (10, 8161244), (13, 6277880), (14, 5829460), (20, 4080622), (26, 3138940), (28, 2914730), (35, 2331784), (40, 2040311), (49, 1665560), (52, 1569470), (56, 1457365), (65, 1255576), (70, 1165892), (91, 896840), (98, 832780), (104, 784735), (130, 627788), (140, 582946), (182, 448420), (196, 416390), (245, 333112), (260, 313894), (280, 291473), (364, 224210), (392, 208195), (455, 179368), (490, 166556), (520, 156947), (637, 128120), (728, 112105), (910, 89684), (980, 83278), (1274, 64060), (1820, 44842), (1960, 41639), (2548, 32030), (3185, 25624), (3203, 25480), (3640, 22421), (5096, 16015), (6370, 12812), (6406, 12740)]