1656551660

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{19801}}^1$

素因数の和:19946

約数の個数: 48

約数和(自身を含む): 3592874880

約数和(自身を除く): 1936323220

約数列:

[1, 2, 4, 5, 10, 20, 47, 89, 94, 178, 188, 235, 356, 445, 470, 890, 940, 1780, 4183, 8366, 16732, 19801, 20915, 39602, 41830, 79204, 83660, 99005, 198010, 396020, 930647, 1762289, 1861294, 3524578, 3722588, 4653235, 7049156, 8811445, 9306470, 17622890, 18612940, 35245780, 82827583, 165655166, 331310332, 414137915, 828275830, 1656551660]

約数ペア:

[(1, 1656551660), (2, 828275830), (4, 414137915), (5, 331310332), (10, 165655166), (20, 82827583), (47, 35245780), (89, 18612940), (94, 17622890), (178, 9306470), (188, 8811445), (235, 7049156), (356, 4653235), (445, 3722588), (470, 3524578), (890, 1861294), (940, 1762289), (1780, 930647), (4183, 396020), (8366, 198010), (16732, 99005), (19801, 83660), (20915, 79204), (39602, 41830)]