21253941

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1$

素因数の和:486

約数の個数: 32

約数和(自身を含む): 33075200

約数和(自身を除く): 11821259

約数列:

[1, 3, 9, 27, 31, 67, 93, 201, 279, 379, 603, 837, 1137, 1809, 2077, 3411, 6231, 10233, 11749, 18693, 25393, 35247, 56079, 76179, 105741, 228537, 317223, 685611, 787183, 2361549, 7084647, 21253941]

約数ペア:

[(1, 21253941), (3, 7084647), (9, 2361549), (27, 787183), (31, 685611), (67, 317223), (93, 228537), (201, 105741), (279, 76179), (379, 56079), (603, 35247), (837, 25393), (1137, 18693), (1809, 11749), (2077, 10233), (3411, 6231)]