21602820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^2\times {\mathrm{263}}^1$

素因数の和:349

約数の個数: 72

約数和(自身を含む): 62403264

約数和(自身を除く): 40800444

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 148, 185, 222, 263, 370, 444, 526, 555, 740, 789, 1052, 1110, 1315, 1369, 1578, 2220, 2630, 2738, 3156, 3945, 4107, 5260, 5476, 6845, 7890, 8214, 9731, 13690, 15780, 16428, 19462, 20535, 27380, 29193, 38924, 41070, 48655, 58386, 82140, 97310, 116772, 145965, 194620, 291930, 360047, 583860, 720094, 1080141, 1440188, 1800235, 2160282, 3600470, 4320564, 5400705, 7200940, 10801410, 21602820]

約数ペア:

[(1, 21602820), (2, 10801410), (3, 7200940), (4, 5400705), (5, 4320564), (6, 3600470), (10, 2160282), (12, 1800235), (15, 1440188), (20, 1080141), (30, 720094), (37, 583860), (60, 360047), (74, 291930), (111, 194620), (148, 145965), (185, 116772), (222, 97310), (263, 82140), (370, 58386), (444, 48655), (526, 41070), (555, 38924), (740, 29193), (789, 27380), (1052, 20535), (1110, 19462), (1315, 16428), (1369, 15780), (1578, 13690), (2220, 9731), (2630, 8214), (2738, 7890), (3156, 6845), (3945, 5476), (4107, 5260)]