21958125

素因数分解:

$3^1\times 5^4\times 7^2\times {\mathrm{239}}^1$

素因数の和:276

約数の個数: 60

約数和(自身を含む): 42736320

約数和(自身を除く): 20778195

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 125, 147, 175, 239, 245, 375, 525, 625, 717, 735, 875, 1195, 1225, 1673, 1875, 2625, 3585, 3675, 4375, 5019, 5975, 6125, 8365, 11711, 13125, 17925, 18375, 25095, 29875, 30625, 35133, 41825, 58555, 89625, 91875, 125475, 149375, 175665, 209125, 292775, 448125, 627375, 878325, 1045625, 1463875, 3136875, 4391625, 7319375, 21958125]

約数ペア:

[(1, 21958125), (3, 7319375), (5, 4391625), (7, 3136875), (15, 1463875), (21, 1045625), (25, 878325), (35, 627375), (49, 448125), (75, 292775), (105, 209125), (125, 175665), (147, 149375), (175, 125475), (239, 91875), (245, 89625), (375, 58555), (525, 41825), (625, 35133), (717, 30625), (735, 29875), (875, 25095), (1195, 18375), (1225, 17925), (1673, 13125), (1875, 11711), (2625, 8365), (3585, 6125), (3675, 5975), (4375, 5019)]