200764420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 443643480

約数和(自身を除く): 242879060

約数列:

[1, 2, 4, 5, 10, 20, 43, 61, 86, 89, 122, 172, 178, 215, 244, 305, 356, 430, 445, 610, 860, 890, 1220, 1780, 1849, 2623, 3698, 3827, 5246, 5429, 7396, 7654, 9245, 10492, 10858, 13115, 15308, 18490, 19135, 21716, 26230, 27145, 36980, 38270, 52460, 54290, 76540, 108580, 112789, 164561, 225578, 233447, 329122, 451156, 466894, 563945, 658244, 822805, 933788, 1127890, 1167235, 1645610, 2255780, 2334470, 3291220, 4668940, 10038221, 20076442, 40152884, 50191105, 100382210, 200764420]

約数ペア:

[(1, 200764420), (2, 100382210), (4, 50191105), (5, 40152884), (10, 20076442), (20, 10038221), (43, 4668940), (61, 3291220), (86, 2334470), (89, 2255780), (122, 1645610), (172, 1167235), (178, 1127890), (215, 933788), (244, 822805), (305, 658244), (356, 563945), (430, 466894), (445, 451156), (610, 329122), (860, 233447), (890, 225578), (1220, 164561), (1780, 112789), (1849, 108580), (2623, 76540), (3698, 54290), (3827, 52460), (5246, 38270), (5429, 36980), (7396, 27145), (7654, 26230), (9245, 21716), (10492, 19135), (10858, 18490), (13115, 15308)]