20208981520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2775959}}^1$

素因数の和:2775992

約数の個数: 80

約数和(自身を含む): 57828798720

約数和(自身を除く): 37619817200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 3640, 7280, 2775959, 5551918, 11103836, 13879795, 19431713, 22207672, 27759590, 36087467, 38863426, 44415344, 55519180, 72174934, 77726852, 97158565, 111038360, 144349868, 155453704, 180437335, 194317130, 222076720, 252612269, 288699736, 310907408, 360874670, 388634260, 505224538, 577399472, 721749340, 777268520, 1010449076, 1263061345, 1443498680, 1554537040, 2020898152, 2526122690, 2886997360, 4041796304, 5052245380, 10104490760, 20208981520]

約数ペア:

[(1, 20208981520), (2, 10104490760), (4, 5052245380), (5, 4041796304), (7, 2886997360), (8, 2526122690), (10, 2020898152), (13, 1554537040), (14, 1443498680), (16, 1263061345), (20, 1010449076), (26, 777268520), (28, 721749340), (35, 577399472), (40, 505224538), (52, 388634260), (56, 360874670), (65, 310907408), (70, 288699736), (80, 252612269), (91, 222076720), (104, 194317130), (112, 180437335), (130, 155453704), (140, 144349868), (182, 111038360), (208, 97158565), (260, 77726852), (280, 72174934), (364, 55519180), (455, 44415344), (520, 38863426), (560, 36087467), (728, 27759590), (910, 22207672), (1040, 19431713), (1456, 13879795), (1820, 11103836), (3640, 5551918), (7280, 2775959)]