21234970

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1531}}^1$

素因数の和:1630

約数の個数: 32

約数和(自身を含む): 40812480

約数和(自身を除く): 19577510

約数列:

[1, 2, 5, 10, 19, 38, 73, 95, 146, 190, 365, 730, 1387, 1531, 2774, 3062, 6935, 7655, 13870, 15310, 29089, 58178, 111763, 145445, 223526, 290890, 558815, 1117630, 2123497, 4246994, 10617485, 21234970]

約数ペア:

[(1, 21234970), (2, 10617485), (5, 4246994), (10, 2123497), (19, 1117630), (38, 558815), (73, 290890), (95, 223526), (146, 145445), (190, 111763), (365, 58178), (730, 29089), (1387, 15310), (1531, 13870), (2774, 7655), (3062, 6935)]