639001532

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{571}}^1\times {\mathrm{21521}}^1$

素因数の和:22109

約数の個数: 24

約数和(自身を含む): 1206437232

約数和(自身を除く): 567435700

約数列:

[1, 2, 4, 13, 26, 52, 571, 1142, 2284, 7423, 14846, 21521, 29692, 43042, 86084, 279773, 559546, 1119092, 12288491, 24576982, 49153964, 159750383, 319500766, 639001532]

約数ペア:

[(1, 639001532), (2, 319500766), (4, 159750383), (13, 49153964), (26, 24576982), (52, 12288491), (571, 1119092), (1142, 559546), (2284, 279773), (7423, 86084), (14846, 43042), (21521, 29692)]