890228900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{19739}}^1$

素因数の和:19805

約数の個数: 72

約数和(自身を含む): 2158924320

約数和(自身を除く): 1268695420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 41, 44, 50, 55, 82, 100, 110, 164, 205, 220, 275, 410, 451, 550, 820, 902, 1025, 1100, 1804, 2050, 2255, 4100, 4510, 9020, 11275, 19739, 22550, 39478, 45100, 78956, 98695, 197390, 217129, 394780, 434258, 493475, 809299, 868516, 986950, 1085645, 1618598, 1973900, 2171290, 3237196, 4046495, 4342580, 5428225, 8092990, 8902289, 10856450, 16185980, 17804578, 20232475, 21712900, 35609156, 40464950, 44511445, 80929900, 89022890, 178045780, 222557225, 445114450, 890228900]

約数ペア:

[(1, 890228900), (2, 445114450), (4, 222557225), (5, 178045780), (10, 89022890), (11, 80929900), (20, 44511445), (22, 40464950), (25, 35609156), (41, 21712900), (44, 20232475), (50, 17804578), (55, 16185980), (82, 10856450), (100, 8902289), (110, 8092990), (164, 5428225), (205, 4342580), (220, 4046495), (275, 3237196), (410, 2171290), (451, 1973900), (550, 1618598), (820, 1085645), (902, 986950), (1025, 868516), (1100, 809299), (1804, 493475), (2050, 434258), (2255, 394780), (4100, 217129), (4510, 197390), (9020, 98695), (11275, 78956), (19739, 45100), (22550, 39478)]