155778920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{354043}}^1$

素因数の和:354065

約数の個数: 32

約数和(自身を含む): 382367520

約数和(自身を除く): 226588600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 354043, 708086, 1416172, 1770215, 2832344, 3540430, 3894473, 7080860, 7788946, 14161720, 15577892, 19472365, 31155784, 38944730, 77889460, 155778920]

約数ペア:

[(1, 155778920), (2, 77889460), (4, 38944730), (5, 31155784), (8, 19472365), (10, 15577892), (11, 14161720), (20, 7788946), (22, 7080860), (40, 3894473), (44, 3540430), (55, 2832344), (88, 1770215), (110, 1416172), (220, 708086), (440, 354043)]