989501720

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^2\times {\mathrm{887}}^1$

素因数の和:1232

約数の個数: 48

約数和(自身を含む): 2242315440

約数和(自身を除く): 1252813720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 887, 1336, 1670, 1774, 3340, 3548, 4435, 6680, 7096, 8870, 17740, 27889, 35480, 55778, 111556, 139445, 148129, 223112, 278890, 296258, 557780, 592516, 740645, 1115560, 1185032, 1481290, 2962580, 5925160, 24737543, 49475086, 98950172, 123687715, 197900344, 247375430, 494750860, 989501720]

約数ペア:

[(1, 989501720), (2, 494750860), (4, 247375430), (5, 197900344), (8, 123687715), (10, 98950172), (20, 49475086), (40, 24737543), (167, 5925160), (334, 2962580), (668, 1481290), (835, 1185032), (887, 1115560), (1336, 740645), (1670, 592516), (1774, 557780), (3340, 296258), (3548, 278890), (4435, 223112), (6680, 148129), (7096, 139445), (8870, 111556), (17740, 55778), (27889, 35480)]