20052500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{617}}^1$

素因数の和:654

約数の個数: 60

約数和(自身を含む): 47300484

約数和(自身を除く): 27247984

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 617, 625, 650, 1234, 1250, 1300, 1625, 2468, 2500, 3085, 3250, 6170, 6500, 8021, 8125, 12340, 15425, 16042, 16250, 30850, 32084, 32500, 40105, 61700, 77125, 80210, 154250, 160420, 200525, 308500, 385625, 401050, 771250, 802100, 1002625, 1542500, 2005250, 4010500, 5013125, 10026250, 20052500]

約数ペア:

[(1, 20052500), (2, 10026250), (4, 5013125), (5, 4010500), (10, 2005250), (13, 1542500), (20, 1002625), (25, 802100), (26, 771250), (50, 401050), (52, 385625), (65, 308500), (100, 200525), (125, 160420), (130, 154250), (250, 80210), (260, 77125), (325, 61700), (500, 40105), (617, 32500), (625, 32084), (650, 30850), (1234, 16250), (1250, 16042), (1300, 15425), (1625, 12340), (2468, 8125), (2500, 8021), (3085, 6500), (3250, 6170)]