21263625

素因数分解:

$3^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{461}}^1$

素因数の和:523

約数の個数: 48

約数和(自身を含む): 39351312

約数和(自身を除く): 18087687

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 123, 125, 205, 225, 369, 375, 461, 615, 1025, 1125, 1383, 1845, 2305, 3075, 4149, 5125, 6915, 9225, 11525, 15375, 18901, 20745, 34575, 46125, 56703, 57625, 94505, 103725, 170109, 172875, 283515, 472525, 518625, 850545, 1417575, 2362625, 4252725, 7087875, 21263625]

約数ペア:

[(1, 21263625), (3, 7087875), (5, 4252725), (9, 2362625), (15, 1417575), (25, 850545), (41, 518625), (45, 472525), (75, 283515), (123, 172875), (125, 170109), (205, 103725), (225, 94505), (369, 57625), (375, 56703), (461, 46125), (615, 34575), (1025, 20745), (1125, 18901), (1383, 15375), (1845, 11525), (2305, 9225), (3075, 6915), (4149, 5125)]