201771220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{227}}^1\times {\mathrm{907}}^1$

素因数の和:1157

約数の個数: 72

約数和(自身を含む): 495615456

約数和(自身を除く): 293844236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 227, 245, 454, 490, 907, 908, 980, 1135, 1589, 1814, 2270, 3178, 3628, 4535, 4540, 6349, 6356, 7945, 9070, 11123, 12698, 15890, 18140, 22246, 25396, 31745, 31780, 44443, 44492, 55615, 63490, 88886, 111230, 126980, 177772, 205889, 222215, 222460, 411778, 444430, 823556, 888860, 1029445, 1441223, 2058890, 2882446, 4117780, 5764892, 7206115, 10088561, 14412230, 20177122, 28824460, 40354244, 50442805, 100885610, 201771220]

約数ペア:

[(1, 201771220), (2, 100885610), (4, 50442805), (5, 40354244), (7, 28824460), (10, 20177122), (14, 14412230), (20, 10088561), (28, 7206115), (35, 5764892), (49, 4117780), (70, 2882446), (98, 2058890), (140, 1441223), (196, 1029445), (227, 888860), (245, 823556), (454, 444430), (490, 411778), (907, 222460), (908, 222215), (980, 205889), (1135, 177772), (1589, 126980), (1814, 111230), (2270, 88886), (3178, 63490), (3628, 55615), (4535, 44492), (4540, 44443), (6349, 31780), (6356, 31745), (7945, 25396), (9070, 22246), (11123, 18140), (12698, 15890)]