639804536

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{368551}}^1$

素因数の和:368595

約数の個数: 32

約数和(自身を含む): 1415239680

約数和(自身を除く): 775435144

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 1736, 368551, 737102, 1474204, 2579857, 2948408, 5159714, 10319428, 11425081, 20638856, 22850162, 45700324, 79975567, 91400648, 159951134, 319902268, 639804536]

約数ペア:

[(1, 639804536), (2, 319902268), (4, 159951134), (7, 91400648), (8, 79975567), (14, 45700324), (28, 22850162), (31, 20638856), (56, 11425081), (62, 10319428), (124, 5159714), (217, 2948408), (248, 2579857), (434, 1474204), (868, 737102), (1736, 368551)]