19515951

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^3\times {\mathrm{47}}^1$

素因数の和:102

約数の個数: 64

約数和(自身を含む): 36556800

約数和(自身を除く): 17040849

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 47, 63, 91, 117, 141, 169, 189, 273, 329, 351, 423, 507, 611, 819, 987, 1183, 1269, 1521, 1833, 2197, 2457, 2961, 3549, 4277, 4563, 5499, 6591, 7943, 8883, 10647, 12831, 15379, 16497, 19773, 23829, 31941, 38493, 46137, 55601, 59319, 71487, 103259, 115479, 138411, 166803, 214461, 309777, 415233, 500409, 722813, 929331, 1501227, 2168439, 2787993, 6505317, 19515951]

約数ペア:

[(1, 19515951), (3, 6505317), (7, 2787993), (9, 2168439), (13, 1501227), (21, 929331), (27, 722813), (39, 500409), (47, 415233), (63, 309777), (91, 214461), (117, 166803), (141, 138411), (169, 115479), (189, 103259), (273, 71487), (329, 59319), (351, 55601), (423, 46137), (507, 38493), (611, 31941), (819, 23829), (987, 19773), (1183, 16497), (1269, 15379), (1521, 12831), (1833, 10647), (2197, 8883), (2457, 7943), (2961, 6591), (3549, 5499), (4277, 4563)]