18997850

素因数分解:

$2^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:239

約数の個数: 48

約数和(自身を含む): 36881568

約数和(自身を除く): 17883718

約数列:

[1, 2, 5, 10, 25, 50, 53, 67, 106, 107, 134, 214, 265, 335, 530, 535, 670, 1070, 1325, 1675, 2650, 2675, 3350, 3551, 5350, 5671, 7102, 7169, 11342, 14338, 17755, 28355, 35510, 35845, 56710, 71690, 88775, 141775, 177550, 179225, 283550, 358450, 379957, 759914, 1899785, 3799570, 9498925, 18997850]

約数ペア:

[(1, 18997850), (2, 9498925), (5, 3799570), (10, 1899785), (25, 759914), (50, 379957), (53, 358450), (67, 283550), (106, 179225), (107, 177550), (134, 141775), (214, 88775), (265, 71690), (335, 56710), (530, 35845), (535, 35510), (670, 28355), (1070, 17755), (1325, 14338), (1675, 11342), (2650, 7169), (2675, 7102), (3350, 5671), (3551, 5350)]