890990375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{20903}}^1$

素因数の和:20960

約数の個数: 32

約数和(自身を含む): 1252233216

約数和(自身を除く): 361242841

約数列:

[1, 5, 11, 25, 31, 55, 125, 155, 275, 341, 775, 1375, 1705, 3875, 8525, 20903, 42625, 104515, 229933, 522575, 647993, 1149665, 2612875, 3239965, 5748325, 7127923, 16199825, 28741625, 35639615, 80999125, 178198075, 890990375]

約数ペア:

[(1, 890990375), (5, 178198075), (11, 80999125), (25, 35639615), (31, 28741625), (55, 16199825), (125, 7127923), (155, 5748325), (275, 3239965), (341, 2612875), (775, 1149665), (1375, 647993), (1705, 522575), (3875, 229933), (8525, 104515), (20903, 42625)]