20794900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{487}}^1$

素因数の和:569

約数の個数: 72

約数和(自身を含む): 52524416

約数和(自身を除く): 31729516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 61, 70, 100, 122, 140, 175, 244, 305, 350, 427, 487, 610, 700, 854, 974, 1220, 1525, 1708, 1948, 2135, 2435, 3050, 3409, 4270, 4870, 6100, 6818, 8540, 9740, 10675, 12175, 13636, 17045, 21350, 24350, 29707, 34090, 42700, 48700, 59414, 68180, 85225, 118828, 148535, 170450, 207949, 297070, 340900, 415898, 594140, 742675, 831796, 1039745, 1485350, 2079490, 2970700, 4158980, 5198725, 10397450, 20794900]

約数ペア:

[(1, 20794900), (2, 10397450), (4, 5198725), (5, 4158980), (7, 2970700), (10, 2079490), (14, 1485350), (20, 1039745), (25, 831796), (28, 742675), (35, 594140), (50, 415898), (61, 340900), (70, 297070), (100, 207949), (122, 170450), (140, 148535), (175, 118828), (244, 85225), (305, 68180), (350, 59414), (427, 48700), (487, 42700), (610, 34090), (700, 29707), (854, 24350), (974, 21350), (1220, 17045), (1525, 13636), (1708, 12175), (1948, 10675), (2135, 9740), (2435, 8540), (3050, 6818), (3409, 6100), (4270, 4870)]