20957200

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^2\times {\mathrm{433}}^1$

素因数の和:473

約数の個数: 90

約数和(自身を含む): 55470842

約数和(自身を除く): 34513642

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 121, 176, 200, 220, 242, 275, 400, 433, 440, 484, 550, 605, 866, 880, 968, 1100, 1210, 1732, 1936, 2165, 2200, 2420, 3025, 3464, 4330, 4400, 4763, 4840, 6050, 6928, 8660, 9526, 9680, 10825, 12100, 17320, 19052, 21650, 23815, 24200, 34640, 38104, 43300, 47630, 48400, 52393, 76208, 86600, 95260, 104786, 119075, 173200, 190520, 209572, 238150, 261965, 381040, 419144, 476300, 523930, 838288, 952600, 1047860, 1309825, 1905200, 2095720, 2619650, 4191440, 5239300, 10478600, 20957200]

約数ペア:

[(1, 20957200), (2, 10478600), (4, 5239300), (5, 4191440), (8, 2619650), (10, 2095720), (11, 1905200), (16, 1309825), (20, 1047860), (22, 952600), (25, 838288), (40, 523930), (44, 476300), (50, 419144), (55, 381040), (80, 261965), (88, 238150), (100, 209572), (110, 190520), (121, 173200), (176, 119075), (200, 104786), (220, 95260), (242, 86600), (275, 76208), (400, 52393), (433, 48400), (440, 47630), (484, 43300), (550, 38104), (605, 34640), (866, 24200), (880, 23815), (968, 21650), (1100, 19052), (1210, 17320), (1732, 12100), (1936, 10825), (2165, 9680), (2200, 9526), (2420, 8660), (3025, 6928), (3464, 6050), (4330, 4840), (4400, 4763)]