21949940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1229}}^1$

素因数の和:1304

約数の個数: 48

約数和(自身を含む): 49593600

約数和(自身を除く): 27643660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 188, 190, 235, 380, 470, 893, 940, 1229, 1786, 2458, 3572, 4465, 4916, 6145, 8930, 12290, 17860, 23351, 24580, 46702, 57763, 93404, 115526, 116755, 231052, 233510, 288815, 467020, 577630, 1097497, 1155260, 2194994, 4389988, 5487485, 10974970, 21949940]

約数ペア:

[(1, 21949940), (2, 10974970), (4, 5487485), (5, 4389988), (10, 2194994), (19, 1155260), (20, 1097497), (38, 577630), (47, 467020), (76, 288815), (94, 233510), (95, 231052), (188, 116755), (190, 115526), (235, 93404), (380, 57763), (470, 46702), (893, 24580), (940, 23351), (1229, 17860), (1786, 12290), (2458, 8930), (3572, 6145), (4465, 4916)]