216501520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{87299}}^1$

素因数の和:87343

約数の個数: 40

約数和(自身を含む): 519609600

約数和(自身を除く): 303108080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 87299, 174598, 349196, 436495, 698392, 872990, 1396784, 1745980, 2706269, 3491960, 5412538, 6983920, 10825076, 13531345, 21650152, 27062690, 43300304, 54125380, 108250760, 216501520]

約数ペア:

[(1, 216501520), (2, 108250760), (4, 54125380), (5, 43300304), (8, 27062690), (10, 21650152), (16, 13531345), (20, 10825076), (31, 6983920), (40, 5412538), (62, 3491960), (80, 2706269), (124, 1745980), (155, 1396784), (248, 872990), (310, 698392), (496, 436495), (620, 349196), (1240, 174598), (2480, 87299)]