19693125

素因数分解:

$3^4\times 5^4\times {\mathrm{389}}^1$

素因数の和:421

約数の個数: 50

約数和(自身を含む): 36855390

約数和(自身を除く): 17162265

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 389, 405, 625, 675, 1125, 1167, 1875, 1945, 2025, 3375, 3501, 5625, 5835, 9725, 10125, 10503, 16875, 17505, 29175, 31509, 48625, 50625, 52515, 87525, 145875, 157545, 243125, 262575, 437625, 729375, 787725, 1312875, 2188125, 3938625, 6564375, 19693125]

約数ペア:

[(1, 19693125), (3, 6564375), (5, 3938625), (9, 2188125), (15, 1312875), (25, 787725), (27, 729375), (45, 437625), (75, 262575), (81, 243125), (125, 157545), (135, 145875), (225, 87525), (375, 52515), (389, 50625), (405, 48625), (625, 31509), (675, 29175), (1125, 17505), (1167, 16875), (1875, 10503), (1945, 10125), (2025, 9725), (3375, 5835), (3501, 5625)]