21391725

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{12401}}^1$

素因数の和:12437

約数の個数: 24

約数和(自身を含む): 36908352

約数和(自身を除く): 15516627

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 345, 575, 1725, 12401, 37203, 62005, 186015, 285223, 310025, 855669, 930075, 1426115, 4278345, 7130575, 21391725]

約数ペア:

[(1, 21391725), (3, 7130575), (5, 4278345), (15, 1426115), (23, 930075), (25, 855669), (69, 310025), (75, 285223), (115, 186015), (345, 62005), (575, 37203), (1725, 12401)]