211916980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{1307}}^1$

素因数の和:1405

約数の個数: 72

約数和(自身を含む): 496841184

約数和(自身を除く): 284924204

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 121, 134, 220, 242, 268, 335, 484, 605, 670, 737, 1210, 1307, 1340, 1474, 2420, 2614, 2948, 3685, 5228, 6535, 7370, 8107, 13070, 14377, 14740, 16214, 26140, 28754, 32428, 40535, 57508, 71885, 81070, 87569, 143770, 158147, 162140, 175138, 287540, 316294, 350276, 437845, 632588, 790735, 875690, 963259, 1581470, 1751380, 1926518, 3162940, 3853036, 4816295, 9632590, 10595849, 19265180, 21191698, 42383396, 52979245, 105958490, 211916980]

約数ペア:

[(1, 211916980), (2, 105958490), (4, 52979245), (5, 42383396), (10, 21191698), (11, 19265180), (20, 10595849), (22, 9632590), (44, 4816295), (55, 3853036), (67, 3162940), (110, 1926518), (121, 1751380), (134, 1581470), (220, 963259), (242, 875690), (268, 790735), (335, 632588), (484, 437845), (605, 350276), (670, 316294), (737, 287540), (1210, 175138), (1307, 162140), (1340, 158147), (1474, 143770), (2420, 87569), (2614, 81070), (2948, 71885), (3685, 57508), (5228, 40535), (6535, 32428), (7370, 28754), (8107, 26140), (13070, 16214), (14377, 14740)]