21581640

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{6661}}^1$

素因数の和:6684

約数の個数: 80

約数和(自身を含む): 72549180

約数和(自身を除く): 50967540

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 270, 324, 360, 405, 540, 648, 810, 1080, 1620, 3240, 6661, 13322, 19983, 26644, 33305, 39966, 53288, 59949, 66610, 79932, 99915, 119898, 133220, 159864, 179847, 199830, 239796, 266440, 299745, 359694, 399660, 479592, 539541, 599490, 719388, 799320, 899235, 1079082, 1198980, 1438776, 1798470, 2158164, 2397960, 2697705, 3596940, 4316328, 5395410, 7193880, 10790820, 21581640]

約数ペア:

[(1, 21581640), (2, 10790820), (3, 7193880), (4, 5395410), (5, 4316328), (6, 3596940), (8, 2697705), (9, 2397960), (10, 2158164), (12, 1798470), (15, 1438776), (18, 1198980), (20, 1079082), (24, 899235), (27, 799320), (30, 719388), (36, 599490), (40, 539541), (45, 479592), (54, 399660), (60, 359694), (72, 299745), (81, 266440), (90, 239796), (108, 199830), (120, 179847), (135, 159864), (162, 133220), (180, 119898), (216, 99915), (270, 79932), (324, 66610), (360, 59949), (405, 53288), (540, 39966), (648, 33305), (810, 26644), (1080, 19983), (1620, 13322), (3240, 6661)]