81905220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{293}}^1\times {\mathrm{1553}}^1$

素因数の和:1861

約数の個数: 72

約数和(自身を含む): 249454296

約数和(自身を除く): 167549076

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 293, 586, 879, 1172, 1465, 1553, 1758, 2637, 2930, 3106, 3516, 4395, 4659, 5274, 5860, 6212, 7765, 8790, 9318, 10548, 13185, 13977, 15530, 17580, 18636, 23295, 26370, 27954, 31060, 46590, 52740, 55908, 69885, 93180, 139770, 279540, 455029, 910058, 1365087, 1820116, 2275145, 2730174, 4095261, 4550290, 5460348, 6825435, 8190522, 9100580, 13650870, 16381044, 20476305, 27301740, 40952610, 81905220]

約数ペア:

[(1, 81905220), (2, 40952610), (3, 27301740), (4, 20476305), (5, 16381044), (6, 13650870), (9, 9100580), (10, 8190522), (12, 6825435), (15, 5460348), (18, 4550290), (20, 4095261), (30, 2730174), (36, 2275145), (45, 1820116), (60, 1365087), (90, 910058), (180, 455029), (293, 279540), (586, 139770), (879, 93180), (1172, 69885), (1465, 55908), (1553, 52740), (1758, 46590), (2637, 31060), (2930, 27954), (3106, 26370), (3516, 23295), (4395, 18636), (4659, 17580), (5274, 15530), (5860, 13977), (6212, 13185), (7765, 10548), (8790, 9318)]