20052520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{797}}^1$

素因数の和:862

約数の個数: 64

約数和(自身を含む): 49124880

約数和(自身を除く): 29072360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 37, 40, 68, 74, 85, 136, 148, 170, 185, 296, 340, 370, 629, 680, 740, 797, 1258, 1480, 1594, 2516, 3145, 3188, 3985, 5032, 6290, 6376, 7970, 12580, 13549, 15940, 25160, 27098, 29489, 31880, 54196, 58978, 67745, 108392, 117956, 135490, 147445, 235912, 270980, 294890, 501313, 541960, 589780, 1002626, 1179560, 2005252, 2506565, 4010504, 5013130, 10026260, 20052520]

約数ペア:

[(1, 20052520), (2, 10026260), (4, 5013130), (5, 4010504), (8, 2506565), (10, 2005252), (17, 1179560), (20, 1002626), (34, 589780), (37, 541960), (40, 501313), (68, 294890), (74, 270980), (85, 235912), (136, 147445), (148, 135490), (170, 117956), (185, 108392), (296, 67745), (340, 58978), (370, 54196), (629, 31880), (680, 29489), (740, 27098), (797, 25160), (1258, 15940), (1480, 13549), (1594, 12580), (2516, 7970), (3145, 6376), (3188, 6290), (3985, 5032)]