61806920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3109}}^1$

素因数の和:3198

約数の個数: 64

約数和(自身を含む): 161222400

約数和(自身を除く): 99415480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 2485, 2840, 3109, 3976, 4970, 6218, 9940, 12436, 15545, 19880, 21763, 24872, 31090, 43526, 62180, 87052, 108815, 124360, 174104, 217630, 220739, 435260, 441478, 870520, 882956, 1103695, 1545173, 1765912, 2207390, 3090346, 4414780, 6180692, 7725865, 8829560, 12361384, 15451730, 30903460, 61806920]

約数ペア:

[(1, 61806920), (2, 30903460), (4, 15451730), (5, 12361384), (7, 8829560), (8, 7725865), (10, 6180692), (14, 4414780), (20, 3090346), (28, 2207390), (35, 1765912), (40, 1545173), (56, 1103695), (70, 882956), (71, 870520), (140, 441478), (142, 435260), (280, 220739), (284, 217630), (355, 174104), (497, 124360), (568, 108815), (710, 87052), (994, 62180), (1420, 43526), (1988, 31090), (2485, 24872), (2840, 21763), (3109, 19880), (3976, 15545), (4970, 12436), (6218, 9940)]