21147190360

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{3367387}}^1$

素因数の和:3367555

約数の個数: 32

約数和(自身を含む): 47884257360

約数和(自身を除く): 26737067000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 3367387, 6734774, 13469548, 16836935, 26939096, 33673870, 67347740, 134695480, 528679759, 1057359518, 2114719036, 2643398795, 4229438072, 5286797590, 10573595180, 21147190360]

約数ペア:

[(1, 21147190360), (2, 10573595180), (4, 5286797590), (5, 4229438072), (8, 2643398795), (10, 2114719036), (20, 1057359518), (40, 528679759), (157, 134695480), (314, 67347740), (628, 33673870), (785, 26939096), (1256, 16836935), (1570, 13469548), (3140, 6734774), (6280, 3367387)]