21709625

素因数分解:

$5^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{577}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 31739136

約数和(自身を除く): 10029511

約数列:

[1, 5, 7, 25, 35, 43, 125, 175, 215, 301, 577, 875, 1075, 1505, 2885, 4039, 5375, 7525, 14425, 20195, 24811, 37625, 72125, 100975, 124055, 173677, 504875, 620275, 868385, 3101375, 4341925, 21709625]

約数ペア:

[(1, 21709625), (5, 4341925), (7, 3101375), (25, 868385), (35, 620275), (43, 504875), (125, 173677), (175, 124055), (215, 100975), (301, 72125), (577, 37625), (875, 24811), (1075, 20195), (1505, 14425), (2885, 7525), (4039, 5375)]