1999837780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{111973}}^1$

素因数の和:112048

約数の個数: 48

約数和(自身を含む): 4514791680

約数和(自身を除く): 2514953900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 188, 190, 235, 380, 470, 893, 940, 1786, 3572, 4465, 8930, 17860, 111973, 223946, 447892, 559865, 1119730, 2127487, 2239460, 4254974, 5262731, 8509948, 10525462, 10637435, 21050924, 21274870, 26313655, 42549740, 52627310, 99991889, 105254620, 199983778, 399967556, 499959445, 999918890, 1999837780]

約数ペア:

[(1, 1999837780), (2, 999918890), (4, 499959445), (5, 399967556), (10, 199983778), (19, 105254620), (20, 99991889), (38, 52627310), (47, 42549740), (76, 26313655), (94, 21274870), (95, 21050924), (188, 10637435), (190, 10525462), (235, 8509948), (380, 5262731), (470, 4254974), (893, 2239460), (940, 2127487), (1786, 1119730), (3572, 559865), (4465, 447892), (8930, 223946), (17860, 111973)]