21508578

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1459}}^1$

素因数の和:1493

約数の個数: 80

約数和(自身を含む): 59357760

約数和(自身を除く): 37849182

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 42, 54, 63, 78, 81, 91, 117, 126, 162, 182, 189, 234, 273, 351, 378, 546, 567, 702, 819, 1053, 1134, 1459, 1638, 2106, 2457, 2918, 4377, 4914, 7371, 8754, 10213, 13131, 14742, 18967, 20426, 26262, 30639, 37934, 39393, 56901, 61278, 78786, 91917, 113802, 118179, 132769, 170703, 183834, 236358, 265538, 275751, 341406, 398307, 512109, 551502, 796614, 827253, 1024218, 1194921, 1536327, 1654506, 2389842, 3072654, 3584763, 7169526, 10754289, 21508578]

約数ペア:

[(1, 21508578), (2, 10754289), (3, 7169526), (6, 3584763), (7, 3072654), (9, 2389842), (13, 1654506), (14, 1536327), (18, 1194921), (21, 1024218), (26, 827253), (27, 796614), (39, 551502), (42, 512109), (54, 398307), (63, 341406), (78, 275751), (81, 265538), (91, 236358), (117, 183834), (126, 170703), (162, 132769), (182, 118179), (189, 113802), (234, 91917), (273, 78786), (351, 61278), (378, 56901), (546, 39393), (567, 37934), (702, 30639), (819, 26262), (1053, 20426), (1134, 18967), (1459, 14742), (1638, 13131), (2106, 10213), (2457, 8754), (2918, 7371), (4377, 4914)]