18412900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{881}}^1$

素因数の和:925

約数の個数: 72

約数和(自身を含む): 45934560

約数和(自身を除く): 27521660

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 190, 209, 220, 275, 380, 418, 475, 550, 836, 881, 950, 1045, 1100, 1762, 1900, 2090, 3524, 4180, 4405, 5225, 8810, 9691, 10450, 16739, 17620, 19382, 20900, 22025, 33478, 38764, 44050, 48455, 66956, 83695, 88100, 96910, 167390, 184129, 193820, 242275, 334780, 368258, 418475, 484550, 736516, 836950, 920645, 969100, 1673900, 1841290, 3682580, 4603225, 9206450, 18412900]

約数ペア:

[(1, 18412900), (2, 9206450), (4, 4603225), (5, 3682580), (10, 1841290), (11, 1673900), (19, 969100), (20, 920645), (22, 836950), (25, 736516), (38, 484550), (44, 418475), (50, 368258), (55, 334780), (76, 242275), (95, 193820), (100, 184129), (110, 167390), (190, 96910), (209, 88100), (220, 83695), (275, 66956), (380, 48455), (418, 44050), (475, 38764), (550, 33478), (836, 22025), (881, 20900), (950, 19382), (1045, 17620), (1100, 16739), (1762, 10450), (1900, 9691), (2090, 8810), (3524, 5225), (4180, 4405)]