19973750

素因数分解:

$2^1\times 5^4\times {\mathrm{19}}^1\times {\mathrm{29}}^2$

素因数の和:99

約数の個数: 60

約数和(自身を含む): 40815060

約数和(自身を除く): 20841310

約数列:

[1, 2, 5, 10, 19, 25, 29, 38, 50, 58, 95, 125, 145, 190, 250, 290, 475, 551, 625, 725, 841, 950, 1102, 1250, 1450, 1682, 2375, 2755, 3625, 4205, 4750, 5510, 7250, 8410, 11875, 13775, 15979, 18125, 21025, 23750, 27550, 31958, 36250, 42050, 68875, 79895, 105125, 137750, 159790, 210250, 344375, 399475, 525625, 688750, 798950, 1051250, 1997375, 3994750, 9986875, 19973750]

約数ペア:

[(1, 19973750), (2, 9986875), (5, 3994750), (10, 1997375), (19, 1051250), (25, 798950), (29, 688750), (38, 525625), (50, 399475), (58, 344375), (95, 210250), (125, 159790), (145, 137750), (190, 105125), (250, 79895), (290, 68875), (475, 42050), (551, 36250), (625, 31958), (725, 27550), (841, 23750), (950, 21025), (1102, 18125), (1250, 15979), (1450, 13775), (1682, 11875), (2375, 8410), (2755, 7250), (3625, 5510), (4205, 4750)]