201321560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:261

約数の個数: 128

約数和(自身を含む): 514382400

約数和(自身を除く): 313060840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 53, 55, 88, 89, 97, 106, 110, 178, 194, 212, 220, 265, 356, 388, 424, 440, 445, 485, 530, 583, 712, 776, 890, 970, 979, 1060, 1067, 1166, 1780, 1940, 1958, 2120, 2134, 2332, 2915, 3560, 3880, 3916, 4268, 4664, 4717, 4895, 5141, 5335, 5830, 7832, 8536, 8633, 9434, 9790, 10282, 10670, 11660, 17266, 18868, 19580, 20564, 21340, 23320, 23585, 25705, 34532, 37736, 39160, 41128, 42680, 43165, 47170, 51410, 51887, 56551, 69064, 86330, 94340, 94963, 102820, 103774, 113102, 172660, 188680, 189926, 205640, 207548, 226204, 259435, 282755, 345320, 379852, 415096, 452408, 457549, 474815, 518870, 565510, 759704, 915098, 949630, 1037740, 1131020, 1830196, 1899260, 2075480, 2262040, 2287745, 3660392, 3798520, 4575490, 5033039, 9150980, 10066078, 18301960, 20132156, 25165195, 40264312, 50330390, 100660780, 201321560]

約数ペア:

[(1, 201321560), (2, 100660780), (4, 50330390), (5, 40264312), (8, 25165195), (10, 20132156), (11, 18301960), (20, 10066078), (22, 9150980), (40, 5033039), (44, 4575490), (53, 3798520), (55, 3660392), (88, 2287745), (89, 2262040), (97, 2075480), (106, 1899260), (110, 1830196), (178, 1131020), (194, 1037740), (212, 949630), (220, 915098), (265, 759704), (356, 565510), (388, 518870), (424, 474815), (440, 457549), (445, 452408), (485, 415096), (530, 379852), (583, 345320), (712, 282755), (776, 259435), (890, 226204), (970, 207548), (979, 205640), (1060, 189926), (1067, 188680), (1166, 172660), (1780, 113102), (1940, 103774), (1958, 102820), (2120, 94963), (2134, 94340), (2332, 86330), (2915, 69064), (3560, 56551), (3880, 51887), (3916, 51410), (4268, 47170), (4664, 43165), (4717, 42680), (4895, 41128), (5141, 39160), (5335, 37736), (5830, 34532), (7832, 25705), (8536, 23585), (8633, 23320), (9434, 21340), (9790, 20564), (10282, 19580), (10670, 18868), (11660, 17266)]