20269375

素因数分解:

$5^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1$

素因数の和:181

約数の個数: 40

約数和(自身を含む): 29915424

約数和(自身を除く): 9646049

約数列:

[1, 5, 7, 25, 35, 41, 113, 125, 175, 205, 287, 565, 625, 791, 875, 1025, 1435, 2825, 3955, 4375, 4633, 5125, 7175, 14125, 19775, 23165, 25625, 32431, 35875, 70625, 98875, 115825, 162155, 179375, 494375, 579125, 810775, 2895625, 4053875, 20269375]

約数ペア:

[(1, 20269375), (5, 4053875), (7, 2895625), (25, 810775), (35, 579125), (41, 494375), (113, 179375), (125, 162155), (175, 115825), (205, 98875), (287, 70625), (565, 35875), (625, 32431), (791, 25625), (875, 23165), (1025, 19775), (1435, 14125), (2825, 7175), (3955, 5125), (4375, 4633)]