18618800

素因数分解:

$2^4\times 5^2\times {\mathrm{89}}^1\times {\mathrm{523}}^1$

素因数の和:630

約数の個数: 60

約数和(自身を含む): 45320760

約数和(自身を除く): 26701960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 89, 100, 178, 200, 356, 400, 445, 523, 712, 890, 1046, 1424, 1780, 2092, 2225, 2615, 3560, 4184, 4450, 5230, 7120, 8368, 8900, 10460, 13075, 17800, 20920, 26150, 35600, 41840, 46547, 52300, 93094, 104600, 186188, 209200, 232735, 372376, 465470, 744752, 930940, 1163675, 1861880, 2327350, 3723760, 4654700, 9309400, 18618800]

約数ペア:

[(1, 18618800), (2, 9309400), (4, 4654700), (5, 3723760), (8, 2327350), (10, 1861880), (16, 1163675), (20, 930940), (25, 744752), (40, 465470), (50, 372376), (80, 232735), (89, 209200), (100, 186188), (178, 104600), (200, 93094), (356, 52300), (400, 46547), (445, 41840), (523, 35600), (712, 26150), (890, 20920), (1046, 17800), (1424, 13075), (1780, 10460), (2092, 8900), (2225, 8368), (2615, 7120), (3560, 5230), (4184, 4450)]