21693035

素因数分解:

$5^1\times 7^4\times {\mathrm{13}}^1\times {\mathrm{139}}^1$

素因数の和:185

約数の個数: 40

約数和(自身を含む): 32939760

約数和(自身を除く): 11246725

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 139, 245, 343, 455, 637, 695, 973, 1715, 1807, 2401, 3185, 4459, 4865, 6811, 9035, 12005, 12649, 22295, 31213, 34055, 47677, 63245, 88543, 156065, 238385, 333739, 442715, 619801, 1668695, 3099005, 4338607, 21693035]

約数ペア:

[(1, 21693035), (5, 4338607), (7, 3099005), (13, 1668695), (35, 619801), (49, 442715), (65, 333739), (91, 238385), (139, 156065), (245, 88543), (343, 63245), (455, 47677), (637, 34055), (695, 31213), (973, 22295), (1715, 12649), (1807, 12005), (2401, 9035), (3185, 6811), (4459, 4865)]