21706710

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{193}}^1$

素因数の和:389

約数の個数: 64

約数和(自身を含む): 54978048

約数和(自身を除く): 33271338

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 163, 193, 230, 326, 345, 386, 489, 579, 690, 815, 965, 978, 1158, 1630, 1930, 2445, 2895, 3749, 4439, 4890, 5790, 7498, 8878, 11247, 13317, 18745, 22195, 22494, 26634, 31459, 37490, 44390, 56235, 62918, 66585, 94377, 112470, 133170, 157295, 188754, 314590, 471885, 723557, 943770, 1447114, 2170671, 3617785, 4341342, 7235570, 10853355, 21706710]

約数ペア:

[(1, 21706710), (2, 10853355), (3, 7235570), (5, 4341342), (6, 3617785), (10, 2170671), (15, 1447114), (23, 943770), (30, 723557), (46, 471885), (69, 314590), (115, 188754), (138, 157295), (163, 133170), (193, 112470), (230, 94377), (326, 66585), (345, 62918), (386, 56235), (489, 44390), (579, 37490), (690, 31459), (815, 26634), (965, 22494), (978, 22195), (1158, 18745), (1630, 13317), (1930, 11247), (2445, 8878), (2895, 7498), (3749, 5790), (4439, 4890)]