20762780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{773}}^1$

素因数の和:878

約数の個数: 48

約数和(自身を含む): 46811520

約数和(自身を除く): 26048740

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 79, 85, 158, 170, 316, 340, 395, 773, 790, 1343, 1546, 1580, 2686, 3092, 3865, 5372, 6715, 7730, 13141, 13430, 15460, 26282, 26860, 52564, 61067, 65705, 122134, 131410, 244268, 262820, 305335, 610670, 1038139, 1221340, 2076278, 4152556, 5190695, 10381390, 20762780]

約数ペア:

[(1, 20762780), (2, 10381390), (4, 5190695), (5, 4152556), (10, 2076278), (17, 1221340), (20, 1038139), (34, 610670), (68, 305335), (79, 262820), (85, 244268), (158, 131410), (170, 122134), (316, 65705), (340, 61067), (395, 52564), (773, 26860), (790, 26282), (1343, 15460), (1546, 13430), (1580, 13141), (2686, 7730), (3092, 6715), (3865, 5372)]