81966920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{4799}}^1$

素因数の和:4878

約数の個数: 64

約数和(自身を含む): 214272000

約数和(自身を除く): 132305080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 244, 280, 305, 427, 488, 610, 854, 1220, 1708, 2135, 2440, 3416, 4270, 4799, 8540, 9598, 17080, 19196, 23995, 33593, 38392, 47990, 67186, 95980, 134372, 167965, 191960, 268744, 292739, 335930, 585478, 671860, 1170956, 1343720, 1463695, 2049173, 2341912, 2927390, 4098346, 5854780, 8196692, 10245865, 11709560, 16393384, 20491730, 40983460, 81966920]

約数ペア:

[(1, 81966920), (2, 40983460), (4, 20491730), (5, 16393384), (7, 11709560), (8, 10245865), (10, 8196692), (14, 5854780), (20, 4098346), (28, 2927390), (35, 2341912), (40, 2049173), (56, 1463695), (61, 1343720), (70, 1170956), (122, 671860), (140, 585478), (244, 335930), (280, 292739), (305, 268744), (427, 191960), (488, 167965), (610, 134372), (854, 95980), (1220, 67186), (1708, 47990), (2135, 38392), (2440, 33593), (3416, 23995), (4270, 19196), (4799, 17080), (8540, 9598)]