19199728

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{461}}^1$

素因数の和:625

約数の個数: 40

約数和(自身を含む): 39528720

約数和(自身を除く): 20328992

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 137, 152, 274, 304, 461, 548, 922, 1096, 1844, 2192, 2603, 3688, 5206, 7376, 8759, 10412, 17518, 20824, 35036, 41648, 63157, 70072, 126314, 140144, 252628, 505256, 1010512, 1199983, 2399966, 4799932, 9599864, 19199728]

約数ペア:

[(1, 19199728), (2, 9599864), (4, 4799932), (8, 2399966), (16, 1199983), (19, 1010512), (38, 505256), (76, 252628), (137, 140144), (152, 126314), (274, 70072), (304, 63157), (461, 41648), (548, 35036), (922, 20824), (1096, 17518), (1844, 10412), (2192, 8759), (2603, 7376), (3688, 5206)]