21690970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{347}}^1$

素因数の和:427

約数の個数: 64

約数和(自身を含む): 48107520

約数和(自身を除く): 26416550

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 47, 70, 94, 95, 133, 190, 235, 266, 329, 347, 470, 658, 665, 694, 893, 1330, 1645, 1735, 1786, 2429, 3290, 3470, 4465, 4858, 6251, 6593, 8930, 12145, 12502, 13186, 16309, 24290, 31255, 32618, 32965, 46151, 62510, 65930, 81545, 92302, 114163, 163090, 228326, 230755, 309871, 461510, 570815, 619742, 1141630, 1549355, 2169097, 3098710, 4338194, 10845485, 21690970]

約数ペア:

[(1, 21690970), (2, 10845485), (5, 4338194), (7, 3098710), (10, 2169097), (14, 1549355), (19, 1141630), (35, 619742), (38, 570815), (47, 461510), (70, 309871), (94, 230755), (95, 228326), (133, 163090), (190, 114163), (235, 92302), (266, 81545), (329, 65930), (347, 62510), (470, 46151), (658, 32965), (665, 32618), (694, 31255), (893, 24290), (1330, 16309), (1645, 13186), (1735, 12502), (1786, 12145), (2429, 8930), (3290, 6593), (3470, 6251), (4465, 4858)]