19640360

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:426

約数の個数: 64

約数和(自身を含む): 46725120

約数和(自身を除く): 27084760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 47, 62, 94, 124, 155, 188, 235, 248, 310, 337, 376, 470, 620, 674, 940, 1240, 1348, 1457, 1685, 1880, 2696, 2914, 3370, 5828, 6740, 7285, 10447, 11656, 13480, 14570, 15839, 20894, 29140, 31678, 41788, 52235, 58280, 63356, 79195, 83576, 104470, 126712, 158390, 208940, 316780, 417880, 491009, 633560, 982018, 1964036, 2455045, 3928072, 4910090, 9820180, 19640360]

約数ペア:

[(1, 19640360), (2, 9820180), (4, 4910090), (5, 3928072), (8, 2455045), (10, 1964036), (20, 982018), (31, 633560), (40, 491009), (47, 417880), (62, 316780), (94, 208940), (124, 158390), (155, 126712), (188, 104470), (235, 83576), (248, 79195), (310, 63356), (337, 58280), (376, 52235), (470, 41788), (620, 31678), (674, 29140), (940, 20894), (1240, 15839), (1348, 14570), (1457, 13480), (1685, 11656), (1880, 10447), (2696, 7285), (2914, 6740), (3370, 5828)]