639421.0000000

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{271}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 11789568

約数和(自身を除く): 7610748

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 257, 271, 514, 542, 771, 813, 1028, 1084, 1285, 1355, 1542, 1626, 2570, 2710, 3084, 3252, 3855, 4065, 5140, 5420, 7710, 8130, 15420, 16260, 69647, 139294, 208941, 278588, 348235, 417882, 696470, 835764, 1044705, 1392940, 2089410, 4178820]

約数ペア:

[(1, 4178820), (2, 2089410), (3, 1392940), (4, 1044705), (5, 835764), (6, 696470), (10, 417882), (12, 348235), (15, 278588), (20, 208941), (30, 139294), (60, 69647), (257, 16260), (271, 15420), (514, 8130), (542, 7710), (771, 5420), (813, 5140), (1028, 4065), (1084, 3855), (1285, 3252), (1355, 3084), (1542, 2710), (1626, 2570)]