20990410

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{569}}^1$

素因数の和:631

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 26287670

約数列:

[1, 2, 5, 7, 10, 14, 17, 31, 34, 35, 62, 70, 85, 119, 155, 170, 217, 238, 310, 434, 527, 569, 595, 1054, 1085, 1138, 1190, 2170, 2635, 2845, 3689, 3983, 5270, 5690, 7378, 7966, 9673, 17639, 18445, 19346, 19915, 35278, 36890, 39830, 48365, 67711, 88195, 96730, 123473, 135422, 176390, 246946, 299863, 338555, 599726, 617365, 677110, 1234730, 1499315, 2099041, 2998630, 4198082, 10495205, 20990410]

約数ペア:

[(1, 20990410), (2, 10495205), (5, 4198082), (7, 2998630), (10, 2099041), (14, 1499315), (17, 1234730), (31, 677110), (34, 617365), (35, 599726), (62, 338555), (70, 299863), (85, 246946), (119, 176390), (155, 135422), (170, 123473), (217, 96730), (238, 88195), (310, 67711), (434, 48365), (527, 39830), (569, 36890), (595, 35278), (1054, 19915), (1085, 19346), (1138, 18445), (1190, 17639), (2170, 9673), (2635, 7966), (2845, 7378), (3689, 5690), (3983, 5270)]