18904305

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:190

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 17591055

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 53, 79, 105, 129, 159, 215, 237, 265, 301, 371, 395, 553, 645, 795, 903, 1113, 1185, 1505, 1659, 1855, 2279, 2765, 3397, 4187, 4515, 5565, 6837, 8295, 10191, 11395, 12561, 15953, 16985, 20935, 23779, 29309, 34185, 47859, 50955, 62805, 71337, 79765, 87927, 118895, 146545, 180041, 239295, 356685, 439635, 540123, 900205, 1260287, 2700615, 3780861, 6301435, 18904305]

約数ペア:

[(1, 18904305), (3, 6301435), (5, 3780861), (7, 2700615), (15, 1260287), (21, 900205), (35, 540123), (43, 439635), (53, 356685), (79, 239295), (105, 180041), (129, 146545), (159, 118895), (215, 87927), (237, 79765), (265, 71337), (301, 62805), (371, 50955), (395, 47859), (553, 34185), (645, 29309), (795, 23779), (903, 20935), (1113, 16985), (1185, 15953), (1505, 12561), (1659, 11395), (1855, 10191), (2279, 8295), (2765, 6837), (3397, 5565), (4187, 4515)]