21516950

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4729}}^1$

素因数の和:4761

約数の個数: 48

約数和(自身を含む): 49267680

約数和(自身を除く): 27750730

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 50, 65, 70, 91, 130, 175, 182, 325, 350, 455, 650, 910, 2275, 4550, 4729, 9458, 23645, 33103, 47290, 61477, 66206, 118225, 122954, 165515, 236450, 307385, 331030, 430339, 614770, 827575, 860678, 1536925, 1655150, 2151695, 3073850, 4303390, 10758475, 21516950]

約数ペア:

[(1, 21516950), (2, 10758475), (5, 4303390), (7, 3073850), (10, 2151695), (13, 1655150), (14, 1536925), (25, 860678), (26, 827575), (35, 614770), (50, 430339), (65, 331030), (70, 307385), (91, 236450), (130, 165515), (175, 122954), (182, 118225), (325, 66206), (350, 61477), (455, 47290), (650, 33103), (910, 23645), (2275, 9458), (4550, 4729)]