20989644

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{857}}^1$

素因数の和:1034

約数の個数: 48

約数和(自身を含む): 53141088

約数和(自身を除く): 32151444

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 157, 314, 471, 628, 857, 942, 1714, 1884, 2041, 2571, 3428, 4082, 5142, 6123, 8164, 10284, 11141, 12246, 22282, 24492, 33423, 44564, 66846, 133692, 134549, 269098, 403647, 538196, 807294, 1614588, 1749137, 3498274, 5247411, 6996548, 10494822, 20989644]

約数ペア:

[(1, 20989644), (2, 10494822), (3, 6996548), (4, 5247411), (6, 3498274), (12, 1749137), (13, 1614588), (26, 807294), (39, 538196), (52, 403647), (78, 269098), (156, 134549), (157, 133692), (314, 66846), (471, 44564), (628, 33423), (857, 24492), (942, 22282), (1714, 12246), (1884, 11141), (2041, 10284), (2571, 8164), (3428, 6123), (4082, 5142)]