21992580

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:450

約数の個数: 96

約数和(自身を含む): 69148800

約数和(自身を除く): 47156220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 139, 180, 270, 278, 293, 417, 540, 556, 586, 695, 834, 879, 1172, 1251, 1390, 1465, 1668, 1758, 2085, 2502, 2637, 2780, 2930, 3516, 3753, 4170, 4395, 5004, 5274, 5860, 6255, 7506, 7911, 8340, 8790, 10548, 12510, 13185, 15012, 15822, 17580, 18765, 25020, 26370, 31644, 37530, 39555, 40727, 52740, 75060, 79110, 81454, 122181, 158220, 162908, 203635, 244362, 366543, 407270, 488724, 610905, 733086, 814540, 1099629, 1221810, 1466172, 1832715, 2199258, 2443620, 3665430, 4398516, 5498145, 7330860, 10996290, 21992580]

約数ペア:

[(1, 21992580), (2, 10996290), (3, 7330860), (4, 5498145), (5, 4398516), (6, 3665430), (9, 2443620), (10, 2199258), (12, 1832715), (15, 1466172), (18, 1221810), (20, 1099629), (27, 814540), (30, 733086), (36, 610905), (45, 488724), (54, 407270), (60, 366543), (90, 244362), (108, 203635), (135, 162908), (139, 158220), (180, 122181), (270, 81454), (278, 79110), (293, 75060), (417, 52740), (540, 40727), (556, 39555), (586, 37530), (695, 31644), (834, 26370), (879, 25020), (1172, 18765), (1251, 17580), (1390, 15822), (1465, 15012), (1668, 13185), (1758, 12510), (2085, 10548), (2502, 8790), (2637, 8340), (2780, 7911), (2930, 7506), (3516, 6255), (3753, 5860), (4170, 5274), (4395, 5004)]