21628560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{227}}^1\times {\mathrm{397}}^1$

素因数の和:640

約数の個数: 80

約数和(自身を含む): 67513536

約数和(自身を除く): 45884976

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 227, 240, 397, 454, 681, 794, 908, 1135, 1191, 1362, 1588, 1816, 1985, 2270, 2382, 2724, 3176, 3405, 3632, 3970, 4540, 4764, 5448, 5955, 6352, 6810, 7940, 9080, 9528, 10896, 11910, 13620, 15880, 18160, 19056, 23820, 27240, 31760, 47640, 54480, 90119, 95280, 180238, 270357, 360476, 450595, 540714, 720952, 901190, 1081428, 1351785, 1441904, 1802380, 2162856, 2703570, 3604760, 4325712, 5407140, 7209520, 10814280, 21628560]

約数ペア:

[(1, 21628560), (2, 10814280), (3, 7209520), (4, 5407140), (5, 4325712), (6, 3604760), (8, 2703570), (10, 2162856), (12, 1802380), (15, 1441904), (16, 1351785), (20, 1081428), (24, 901190), (30, 720952), (40, 540714), (48, 450595), (60, 360476), (80, 270357), (120, 180238), (227, 95280), (240, 90119), (397, 54480), (454, 47640), (681, 31760), (794, 27240), (908, 23820), (1135, 19056), (1191, 18160), (1362, 15880), (1588, 13620), (1816, 11910), (1985, 10896), (2270, 9528), (2382, 9080), (2724, 7940), (3176, 6810), (3405, 6352), (3632, 5955), (3970, 5448), (4540, 4764)]