20999625

素因数分解:

$3^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{1931}}^1$

素因数の和:1978

約数の個数: 32

約数和(自身を含む): 36167040

約数和(自身を除く): 15167415

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 125, 145, 375, 435, 725, 1931, 2175, 3625, 5793, 9655, 10875, 28965, 48275, 55999, 144825, 167997, 241375, 279995, 724125, 839985, 1399975, 4199925, 6999875, 20999625]

約数ペア:

[(1, 20999625), (3, 6999875), (5, 4199925), (15, 1399975), (25, 839985), (29, 724125), (75, 279995), (87, 241375), (125, 167997), (145, 144825), (375, 55999), (435, 48275), (725, 28965), (1931, 10875), (2175, 9655), (3625, 5793)]