20381200

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:305

約数の個数: 120

約数和(自身を含む): 58121280

約数和(自身を除く): 37740080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 29, 35, 40, 50, 56, 58, 70, 80, 100, 112, 116, 140, 145, 175, 200, 203, 232, 251, 280, 290, 350, 400, 406, 464, 502, 560, 580, 700, 725, 812, 1004, 1015, 1160, 1255, 1400, 1450, 1624, 1757, 2008, 2030, 2320, 2510, 2800, 2900, 3248, 3514, 4016, 4060, 5020, 5075, 5800, 6275, 7028, 7279, 8120, 8785, 10040, 10150, 11600, 12550, 14056, 14558, 16240, 17570, 20080, 20300, 25100, 28112, 29116, 35140, 36395, 40600, 43925, 50200, 50953, 58232, 70280, 72790, 81200, 87850, 100400, 101906, 116464, 140560, 145580, 175700, 181975, 203812, 254765, 291160, 351400, 363950, 407624, 509530, 582320, 702800, 727900, 815248, 1019060, 1273825, 1455800, 2038120, 2547650, 2911600, 4076240, 5095300, 10190600, 20381200]

約数ペア:

[(1, 20381200), (2, 10190600), (4, 5095300), (5, 4076240), (7, 2911600), (8, 2547650), (10, 2038120), (14, 1455800), (16, 1273825), (20, 1019060), (25, 815248), (28, 727900), (29, 702800), (35, 582320), (40, 509530), (50, 407624), (56, 363950), (58, 351400), (70, 291160), (80, 254765), (100, 203812), (112, 181975), (116, 175700), (140, 145580), (145, 140560), (175, 116464), (200, 101906), (203, 100400), (232, 87850), (251, 81200), (280, 72790), (290, 70280), (350, 58232), (400, 50953), (406, 50200), (464, 43925), (502, 40600), (560, 36395), (580, 35140), (700, 29116), (725, 28112), (812, 25100), (1004, 20300), (1015, 20080), (1160, 17570), (1255, 16240), (1400, 14558), (1450, 14056), (1624, 12550), (1757, 11600), (2008, 10150), (2030, 10040), (2320, 8785), (2510, 8120), (2800, 7279), (2900, 7028), (3248, 6275), (3514, 5800), (4016, 5075), (4060, 5020)]