21000547700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{1213}}^1\times {\mathrm{15739}}^1$

素因数の和:16977

約数の個数: 72

約数和(自身を含む): 49758169440

約数和(自身を除く): 28757621740

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 1213, 2426, 4852, 6065, 12130, 13343, 15739, 24260, 26686, 30325, 31478, 53372, 60650, 62956, 66715, 78695, 121300, 133430, 157390, 173129, 266860, 314780, 333575, 346258, 393475, 667150, 692516, 786950, 865645, 1334300, 1573900, 1731290, 3462580, 4328225, 8656450, 17312900, 19091407, 38182814, 76365628, 95457035, 190914070, 210005477, 381828140, 420010954, 477285175, 840021908, 954570350, 1050027385, 1909140700, 2100054770, 4200109540, 5250136925, 10500273850, 21000547700]

約数ペア:

[(1, 21000547700), (2, 10500273850), (4, 5250136925), (5, 4200109540), (10, 2100054770), (11, 1909140700), (20, 1050027385), (22, 954570350), (25, 840021908), (44, 477285175), (50, 420010954), (55, 381828140), (100, 210005477), (110, 190914070), (220, 95457035), (275, 76365628), (550, 38182814), (1100, 19091407), (1213, 17312900), (2426, 8656450), (4852, 4328225), (6065, 3462580), (12130, 1731290), (13343, 1573900), (15739, 1334300), (24260, 865645), (26686, 786950), (30325, 692516), (31478, 667150), (53372, 393475), (60650, 346258), (62956, 333575), (66715, 314780), (78695, 266860), (121300, 173129), (133430, 157390)]