20754800

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:171

約数の個数: 120

約数和(自身を含む): 56045520

約数和(自身を除く): 35290720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 53, 55, 80, 88, 89, 100, 106, 110, 176, 178, 200, 212, 220, 265, 275, 356, 400, 424, 440, 445, 530, 550, 583, 712, 848, 880, 890, 979, 1060, 1100, 1166, 1325, 1424, 1780, 1958, 2120, 2200, 2225, 2332, 2650, 2915, 3560, 3916, 4240, 4400, 4450, 4664, 4717, 4895, 5300, 5830, 7120, 7832, 8900, 9328, 9434, 9790, 10600, 11660, 14575, 15664, 17800, 18868, 19580, 21200, 23320, 23585, 24475, 29150, 35600, 37736, 39160, 46640, 47170, 48950, 51887, 58300, 75472, 78320, 94340, 97900, 103774, 116600, 117925, 188680, 195800, 207548, 233200, 235850, 259435, 377360, 391600, 415096, 471700, 518870, 830192, 943400, 1037740, 1297175, 1886800, 2075480, 2594350, 4150960, 5188700, 10377400, 20754800]

約数ペア:

[(1, 20754800), (2, 10377400), (4, 5188700), (5, 4150960), (8, 2594350), (10, 2075480), (11, 1886800), (16, 1297175), (20, 1037740), (22, 943400), (25, 830192), (40, 518870), (44, 471700), (50, 415096), (53, 391600), (55, 377360), (80, 259435), (88, 235850), (89, 233200), (100, 207548), (106, 195800), (110, 188680), (176, 117925), (178, 116600), (200, 103774), (212, 97900), (220, 94340), (265, 78320), (275, 75472), (356, 58300), (400, 51887), (424, 48950), (440, 47170), (445, 46640), (530, 39160), (550, 37736), (583, 35600), (712, 29150), (848, 24475), (880, 23585), (890, 23320), (979, 21200), (1060, 19580), (1100, 18868), (1166, 17800), (1325, 15664), (1424, 14575), (1780, 11660), (1958, 10600), (2120, 9790), (2200, 9434), (2225, 9328), (2332, 8900), (2650, 7832), (2915, 7120), (3560, 5830), (3916, 5300), (4240, 4895), (4400, 4717), (4450, 4664)]