1981665

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{233}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 4088448

約数和(自身を除く): 2106783

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 233, 243, 315, 405, 567, 699, 945, 1165, 1215, 1631, 1701, 2097, 2835, 3495, 4893, 6291, 8155, 8505, 10485, 14679, 18873, 24465, 31455, 44037, 56619, 73395, 94365, 132111, 220185, 283095, 396333, 660555, 1981665]

約数ペア:

[(1, 1981665), (3, 660555), (5, 396333), (7, 283095), (9, 220185), (15, 132111), (21, 94365), (27, 73395), (35, 56619), (45, 44037), (63, 31455), (81, 24465), (105, 18873), (135, 14679), (189, 10485), (233, 8505), (243, 8155), (315, 6291), (405, 4893), (567, 3495), (699, 2835), (945, 2097), (1165, 1701), (1215, 1631)]