291278740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^2\times {\mathrm{347}}^1$

素因数の和:469

約数の個数: 72

約数和(自身を含む): 659766240

約数和(自身を除く): 368487500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 188, 190, 235, 347, 380, 470, 694, 893, 940, 1388, 1735, 1786, 2209, 3470, 3572, 4418, 4465, 6593, 6940, 8836, 8930, 11045, 13186, 16309, 17860, 22090, 26372, 32618, 32965, 41971, 44180, 65236, 65930, 81545, 83942, 131860, 163090, 167884, 209855, 309871, 326180, 419710, 619742, 766523, 839420, 1239484, 1533046, 1549355, 3066092, 3098710, 3832615, 6197420, 7665230, 14563937, 15330460, 29127874, 58255748, 72819685, 145639370, 291278740]

約数ペア:

[(1, 291278740), (2, 145639370), (4, 72819685), (5, 58255748), (10, 29127874), (19, 15330460), (20, 14563937), (38, 7665230), (47, 6197420), (76, 3832615), (94, 3098710), (95, 3066092), (188, 1549355), (190, 1533046), (235, 1239484), (347, 839420), (380, 766523), (470, 619742), (694, 419710), (893, 326180), (940, 309871), (1388, 209855), (1735, 167884), (1786, 163090), (2209, 131860), (3470, 83942), (3572, 81545), (4418, 65930), (4465, 65236), (6593, 44180), (6940, 41971), (8836, 32965), (8930, 32618), (11045, 26372), (13186, 22090), (16309, 17860)]