21906015

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{269}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 36158400

約数和(自身を除く): 14252385

約数列:

[1, 3, 5, 15, 61, 89, 183, 267, 269, 305, 445, 807, 915, 1335, 1345, 4035, 5429, 16287, 16409, 23941, 27145, 49227, 71823, 81435, 82045, 119705, 246135, 359115, 1460401, 4381203, 7302005, 21906015]

約数ペア:

[(1, 21906015), (3, 7302005), (5, 4381203), (15, 1460401), (61, 359115), (89, 246135), (183, 119705), (267, 82045), (269, 81435), (305, 71823), (445, 49227), (807, 27145), (915, 23941), (1335, 16409), (1345, 16287), (4035, 5429)]