21148850

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{179}}^1$

素因数の和:347

約数の個数: 48

約数和(自身を含む): 42184800

約数和(自身を除く): 21035950

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 139, 170, 179, 278, 358, 425, 695, 850, 895, 1390, 1790, 2363, 3043, 3475, 4475, 4726, 6086, 6950, 8950, 11815, 15215, 23630, 24881, 30430, 49762, 59075, 76075, 118150, 124405, 152150, 248810, 422977, 622025, 845954, 1244050, 2114885, 4229770, 10574425, 21148850]

約数ペア:

[(1, 21148850), (2, 10574425), (5, 4229770), (10, 2114885), (17, 1244050), (25, 845954), (34, 622025), (50, 422977), (85, 248810), (139, 152150), (170, 124405), (179, 118150), (278, 76075), (358, 59075), (425, 49762), (695, 30430), (850, 24881), (895, 23630), (1390, 15215), (1790, 11815), (2363, 8950), (3043, 6950), (3475, 6086), (4475, 4726)]