21153090

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{383}}^1$

素因数の和:663

約数の個数: 64

約数和(自身を含む): 58392576

約数和(自身を除く): 37239486

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 263, 383, 526, 766, 789, 1149, 1315, 1578, 1841, 1915, 2298, 2630, 2681, 3682, 3830, 3945, 5362, 5523, 5745, 7890, 8043, 9205, 11046, 11490, 13405, 16086, 18410, 26810, 27615, 40215, 55230, 80430, 100729, 201458, 302187, 503645, 604374, 705103, 1007290, 1410206, 1510935, 2115309, 3021870, 3525515, 4230618, 7051030, 10576545, 21153090]

約数ペア:

[(1, 21153090), (2, 10576545), (3, 7051030), (5, 4230618), (6, 3525515), (7, 3021870), (10, 2115309), (14, 1510935), (15, 1410206), (21, 1007290), (30, 705103), (35, 604374), (42, 503645), (70, 302187), (105, 201458), (210, 100729), (263, 80430), (383, 55230), (526, 40215), (766, 27615), (789, 26810), (1149, 18410), (1315, 16086), (1578, 13405), (1841, 11490), (1915, 11046), (2298, 9205), (2630, 8043), (2681, 7890), (3682, 5745), (3830, 5523), (3945, 5362)]