181487180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{1699}}^1$

素因数の和:1831

約数の個数: 72

約数和(自身を含む): 447678000

約数和(自身を除く): 266190820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 109, 140, 196, 218, 245, 436, 490, 545, 763, 980, 1090, 1526, 1699, 2180, 3052, 3398, 3815, 5341, 6796, 7630, 8495, 10682, 11893, 15260, 16990, 21364, 23786, 26705, 33980, 47572, 53410, 59465, 83251, 106820, 118930, 166502, 185191, 237860, 333004, 370382, 416255, 740764, 832510, 925955, 1296337, 1665020, 1851910, 2592674, 3703820, 5185348, 6481685, 9074359, 12963370, 18148718, 25926740, 36297436, 45371795, 90743590, 181487180]

約数ペア:

[(1, 181487180), (2, 90743590), (4, 45371795), (5, 36297436), (7, 25926740), (10, 18148718), (14, 12963370), (20, 9074359), (28, 6481685), (35, 5185348), (49, 3703820), (70, 2592674), (98, 1851910), (109, 1665020), (140, 1296337), (196, 925955), (218, 832510), (245, 740764), (436, 416255), (490, 370382), (545, 333004), (763, 237860), (980, 185191), (1090, 166502), (1526, 118930), (1699, 106820), (2180, 83251), (3052, 59465), (3398, 53410), (3815, 47572), (5341, 33980), (6796, 26705), (7630, 23786), (8495, 21364), (10682, 16990), (11893, 15260)]