20281158

素因数分解:

$2^1\times 3^3\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:250

約数の個数: 64

約数和(自身を含む): 47139840

約数和(自身を除く): 26858682

約数列:

[1, 2, 3, 6, 9, 18, 27, 47, 54, 61, 94, 122, 131, 141, 183, 262, 282, 366, 393, 423, 549, 786, 846, 1098, 1179, 1269, 1647, 2358, 2538, 2867, 3294, 3537, 5734, 6157, 7074, 7991, 8601, 12314, 15982, 17202, 18471, 23973, 25803, 36942, 47946, 51606, 55413, 71919, 77409, 110826, 143838, 154818, 166239, 215757, 332478, 375577, 431514, 751154, 1126731, 2253462, 3380193, 6760386, 10140579, 20281158]

約数ペア:

[(1, 20281158), (2, 10140579), (3, 6760386), (6, 3380193), (9, 2253462), (18, 1126731), (27, 751154), (47, 431514), (54, 375577), (61, 332478), (94, 215757), (122, 166239), (131, 154818), (141, 143838), (183, 110826), (262, 77409), (282, 71919), (366, 55413), (393, 51606), (423, 47946), (549, 36942), (786, 25803), (846, 23973), (1098, 18471), (1179, 17202), (1269, 15982), (1647, 12314), (2358, 8601), (2538, 7991), (2867, 7074), (3294, 6157), (3537, 5734)]