28189840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{709}}^1$

素因数の和:800

約数の個数: 80

約数和(自身を含む): 76066560

約数和(自身を除く): 47876720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 497, 560, 568, 709, 710, 994, 1136, 1418, 1420, 1988, 2485, 2836, 2840, 3545, 3976, 4963, 4970, 5672, 5680, 7090, 7952, 9926, 9940, 11344, 14180, 19852, 19880, 24815, 28360, 39704, 39760, 49630, 50339, 56720, 79408, 99260, 100678, 198520, 201356, 251695, 352373, 397040, 402712, 503390, 704746, 805424, 1006780, 1409492, 1761865, 2013560, 2818984, 3523730, 4027120, 5637968, 7047460, 14094920, 28189840]

約数ペア:

[(1, 28189840), (2, 14094920), (4, 7047460), (5, 5637968), (7, 4027120), (8, 3523730), (10, 2818984), (14, 2013560), (16, 1761865), (20, 1409492), (28, 1006780), (35, 805424), (40, 704746), (56, 503390), (70, 402712), (71, 397040), (80, 352373), (112, 251695), (140, 201356), (142, 198520), (280, 100678), (284, 99260), (355, 79408), (497, 56720), (560, 50339), (568, 49630), (709, 39760), (710, 39704), (994, 28360), (1136, 24815), (1418, 19880), (1420, 19852), (1988, 14180), (2485, 11344), (2836, 9940), (2840, 9926), (3545, 7952), (3976, 7090), (4963, 5680), (4970, 5672)]