18900650

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:263

約数の個数: 48

約数和(自身を含む): 36828000

約数和(自身を除く): 17927350

約数列:

[1, 2, 5, 10, 25, 43, 50, 59, 86, 118, 149, 215, 295, 298, 430, 590, 745, 1075, 1475, 1490, 2150, 2537, 2950, 3725, 5074, 6407, 7450, 8791, 12685, 12814, 17582, 25370, 32035, 43955, 63425, 64070, 87910, 126850, 160175, 219775, 320350, 378013, 439550, 756026, 1890065, 3780130, 9450325, 18900650]

約数ペア:

[(1, 18900650), (2, 9450325), (5, 3780130), (10, 1890065), (25, 756026), (43, 439550), (50, 378013), (59, 320350), (86, 219775), (118, 160175), (149, 126850), (215, 87910), (295, 64070), (298, 63425), (430, 43955), (590, 32035), (745, 25370), (1075, 17582), (1475, 12814), (1490, 12685), (2150, 8791), (2537, 7450), (2950, 6407), (3725, 5074)]