20929129900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4271251}}^1$

素因数の和:4271279

約数の個数: 54

約数和(自身を含む): 52831115988

約数和(自身を除く): 31901986088

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4900, 4271251, 8542502, 17085004, 21356255, 29898757, 42712510, 59797514, 85425020, 106781275, 119595028, 149493785, 209291299, 213562550, 298987570, 418582598, 427125100, 597975140, 747468925, 837165196, 1046456495, 1494937850, 2092912990, 2989875700, 4185825980, 5232282475, 10464564950, 20929129900]

約数ペア:

[(1, 20929129900), (2, 10464564950), (4, 5232282475), (5, 4185825980), (7, 2989875700), (10, 2092912990), (14, 1494937850), (20, 1046456495), (25, 837165196), (28, 747468925), (35, 597975140), (49, 427125100), (50, 418582598), (70, 298987570), (98, 213562550), (100, 209291299), (140, 149493785), (175, 119595028), (196, 106781275), (245, 85425020), (350, 59797514), (490, 42712510), (700, 29898757), (980, 21356255), (1225, 17085004), (2450, 8542502), (4900, 4271251)]