21396609

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1297}}^1$

素因数の和:1366

約数の個数: 32

約数和(自身を含む): 34890240

約数和(自身を除く): 13493631

約数列:

[1, 3, 9, 13, 27, 39, 47, 117, 141, 351, 423, 611, 1269, 1297, 1833, 3891, 5499, 11673, 16497, 16861, 35019, 50583, 60959, 151749, 182877, 455247, 548631, 792467, 1645893, 2377401, 7132203, 21396609]

約数ペア:

[(1, 21396609), (3, 7132203), (9, 2377401), (13, 1645893), (27, 792467), (39, 548631), (47, 455247), (117, 182877), (141, 151749), (351, 60959), (423, 50583), (611, 35019), (1269, 16861), (1297, 16497), (1833, 11673), (3891, 5499)]