221473971

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{5077}}^1$

素因数の和:5251

約数の個数: 24

約数和(自身を含む): 331126224

約数和(自身を除く): 109652253

約数列:

[1, 3, 9, 37, 111, 131, 333, 393, 1179, 4847, 5077, 14541, 15231, 43623, 45693, 187849, 563547, 665087, 1690641, 1995261, 5985783, 24608219, 73824657, 221473971]

約数ペア:

[(1, 221473971), (3, 73824657), (9, 24608219), (37, 5985783), (111, 1995261), (131, 1690641), (333, 665087), (393, 563547), (1179, 187849), (4847, 45693), (5077, 43623), (14541, 15231)]