21484470

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{389}}^1$

素因数の和:669

約数の個数: 64

約数和(自身を含む): 59304960

約数和(自身を除く): 37820490

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 263, 389, 526, 778, 789, 1167, 1315, 1578, 1841, 1945, 2334, 2630, 2723, 3682, 3890, 3945, 5446, 5523, 5835, 7890, 8169, 9205, 11046, 11670, 13615, 16338, 18410, 27230, 27615, 40845, 55230, 81690, 102307, 204614, 306921, 511535, 613842, 716149, 1023070, 1432298, 1534605, 2148447, 3069210, 3580745, 4296894, 7161490, 10742235, 21484470]

約数ペア:

[(1, 21484470), (2, 10742235), (3, 7161490), (5, 4296894), (6, 3580745), (7, 3069210), (10, 2148447), (14, 1534605), (15, 1432298), (21, 1023070), (30, 716149), (35, 613842), (42, 511535), (70, 306921), (105, 204614), (210, 102307), (263, 81690), (389, 55230), (526, 40845), (778, 27615), (789, 27230), (1167, 18410), (1315, 16338), (1578, 13615), (1841, 11670), (1945, 11046), (2334, 9205), (2630, 8169), (2723, 7890), (3682, 5835), (3890, 5523), (3945, 5446)]