15901431

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 27234144

約数和(自身を除く): 11332713

約数列:

[1, 3, 7, 13, 21, 39, 49, 53, 91, 147, 157, 159, 273, 371, 471, 637, 689, 1099, 1113, 1911, 2041, 2067, 2597, 3297, 4823, 6123, 7693, 7791, 8321, 14287, 14469, 23079, 24963, 33761, 42861, 58247, 100009, 101283, 108173, 174741, 300027, 324519, 407729, 757211, 1223187, 2271633, 5300477, 15901431]

約数ペア:

[(1, 15901431), (3, 5300477), (7, 2271633), (13, 1223187), (21, 757211), (39, 407729), (49, 324519), (53, 300027), (91, 174741), (147, 108173), (157, 101283), (159, 100009), (273, 58247), (371, 42861), (471, 33761), (637, 24963), (689, 23079), (1099, 14469), (1113, 14287), (1911, 8321), (2041, 7791), (2067, 7693), (2597, 6123), (3297, 4823)]