21186378

素因数分解:

$2^1\times 3^2\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:451

約数の個数: 48

約数和(自身を含む): 47623680

約数和(自身を除く): 26437302

約数列:

[1, 2, 3, 6, 9, 18, 47, 79, 94, 141, 158, 237, 282, 317, 423, 474, 634, 711, 846, 951, 1422, 1902, 2853, 3713, 5706, 7426, 11139, 14899, 22278, 25043, 29798, 33417, 44697, 50086, 66834, 75129, 89394, 134091, 150258, 225387, 268182, 450774, 1177021, 2354042, 3531063, 7062126, 10593189, 21186378]

約数ペア:

[(1, 21186378), (2, 10593189), (3, 7062126), (6, 3531063), (9, 2354042), (18, 1177021), (47, 450774), (79, 268182), (94, 225387), (141, 150258), (158, 134091), (237, 89394), (282, 75129), (317, 66834), (423, 50086), (474, 44697), (634, 33417), (711, 29798), (846, 25043), (951, 22278), (1422, 14899), (1902, 11139), (2853, 7426), (3713, 5706)]