18268400

素因数分解:

$2^4\times 5^2\times {\mathrm{109}}^1\times {\mathrm{419}}^1$

素因数の和:546

約数の個数: 60

約数和(自身を含む): 44398200

約数和(自身を除く): 26129800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 109, 200, 218, 400, 419, 436, 545, 838, 872, 1090, 1676, 1744, 2095, 2180, 2725, 3352, 4190, 4360, 5450, 6704, 8380, 8720, 10475, 10900, 16760, 20950, 21800, 33520, 41900, 43600, 45671, 83800, 91342, 167600, 182684, 228355, 365368, 456710, 730736, 913420, 1141775, 1826840, 2283550, 3653680, 4567100, 9134200, 18268400]

約数ペア:

[(1, 18268400), (2, 9134200), (4, 4567100), (5, 3653680), (8, 2283550), (10, 1826840), (16, 1141775), (20, 913420), (25, 730736), (40, 456710), (50, 365368), (80, 228355), (100, 182684), (109, 167600), (200, 91342), (218, 83800), (400, 45671), (419, 43600), (436, 41900), (545, 33520), (838, 21800), (872, 20950), (1090, 16760), (1676, 10900), (1744, 10475), (2095, 8720), (2180, 8380), (2725, 6704), (3352, 5450), (4190, 4360)]