638487855

素因数分解:

$3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{307}}^1\times {\mathrm{409}}^1$

素因数の和:840

約数の個数: 48

約数和(自身を含む): 1122881760

約数和(自身を除く): 484393905

約数列:

[1, 3, 5, 9, 15, 45, 113, 307, 339, 409, 565, 921, 1017, 1227, 1535, 1695, 2045, 2763, 3681, 4605, 5085, 6135, 13815, 18405, 34691, 46217, 104073, 125563, 138651, 173455, 231085, 312219, 376689, 415953, 520365, 627815, 693255, 1130067, 1561095, 1883445, 2079765, 5650335, 14188619, 42565857, 70943095, 127697571, 212829285, 638487855]

約数ペア:

[(1, 638487855), (3, 212829285), (5, 127697571), (9, 70943095), (15, 42565857), (45, 14188619), (113, 5650335), (307, 2079765), (339, 1883445), (409, 1561095), (565, 1130067), (921, 693255), (1017, 627815), (1227, 520365), (1535, 415953), (1695, 376689), (2045, 312219), (2763, 231085), (3681, 173455), (4605, 138651), (5085, 125563), (6135, 104073), (13815, 46217), (18405, 34691)]