21231512

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{139681}}^1$

素因数の和:139706

約数の個数: 16

約数和(自身を含む): 41904600

約数和(自身を除く): 20673088

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 139681, 279362, 558724, 1117448, 2653939, 5307878, 10615756, 21231512]

約数ペア:

[(1, 21231512), (2, 10615756), (4, 5307878), (8, 2653939), (19, 1117448), (38, 558724), (76, 279362), (152, 139681)]