81225100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1801}}^1$

素因数の和:1867

約数の個数: 72

約数和(自身を含む): 197081136

約数和(自身を除く): 115856036

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 41, 44, 50, 55, 82, 100, 110, 164, 205, 220, 275, 410, 451, 550, 820, 902, 1025, 1100, 1801, 1804, 2050, 2255, 3602, 4100, 4510, 7204, 9005, 9020, 11275, 18010, 19811, 22550, 36020, 39622, 45025, 45100, 73841, 79244, 90050, 99055, 147682, 180100, 198110, 295364, 369205, 396220, 495275, 738410, 812251, 990550, 1476820, 1624502, 1846025, 1981100, 3249004, 3692050, 4061255, 7384100, 8122510, 16245020, 20306275, 40612550, 81225100]

約数ペア:

[(1, 81225100), (2, 40612550), (4, 20306275), (5, 16245020), (10, 8122510), (11, 7384100), (20, 4061255), (22, 3692050), (25, 3249004), (41, 1981100), (44, 1846025), (50, 1624502), (55, 1476820), (82, 990550), (100, 812251), (110, 738410), (164, 495275), (205, 396220), (220, 369205), (275, 295364), (410, 198110), (451, 180100), (550, 147682), (820, 99055), (902, 90050), (1025, 79244), (1100, 73841), (1801, 45100), (1804, 45025), (2050, 39622), (2255, 36020), (3602, 22550), (4100, 19811), (4510, 18010), (7204, 11275), (9005, 9020)]