159419980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1\times {\mathrm{661}}^1$

素因数の和:1090

約数の個数: 48

約数和(自身を含む): 346993920

約数和(自身を除く): 187573940

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 389, 620, 661, 778, 1322, 1556, 1945, 2644, 3305, 3890, 6610, 7780, 12059, 13220, 20491, 24118, 40982, 48236, 60295, 81964, 102455, 120590, 204910, 241180, 257129, 409820, 514258, 1028516, 1285645, 2571290, 5142580, 7970999, 15941998, 31883996, 39854995, 79709990, 159419980]

約数ペア:

[(1, 159419980), (2, 79709990), (4, 39854995), (5, 31883996), (10, 15941998), (20, 7970999), (31, 5142580), (62, 2571290), (124, 1285645), (155, 1028516), (310, 514258), (389, 409820), (620, 257129), (661, 241180), (778, 204910), (1322, 120590), (1556, 102455), (1945, 81964), (2644, 60295), (3305, 48236), (3890, 40982), (6610, 24118), (7780, 20491), (12059, 13220)]