21504425

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{251}}^1$

素因数の和:433

約数の個数: 24

約数和(自身を含む): 28123200

約数和(自身を除く): 6618775

約数列:

[1, 5, 23, 25, 115, 149, 251, 575, 745, 1255, 3427, 3725, 5773, 6275, 17135, 28865, 37399, 85675, 144325, 186995, 860177, 934975, 4300885, 21504425]

約数ペア:

[(1, 21504425), (5, 4300885), (23, 934975), (25, 860177), (115, 186995), (149, 144325), (251, 85675), (575, 37399), (745, 28865), (1255, 17135), (3427, 6275), (3725, 5773)]