21021720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5651}}^1$

素因数の和:5696

約数の個数: 64

約数和(自身を含む): 65111040

約数和(自身を除く): 44089320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 5651, 11302, 16953, 22604, 28255, 33906, 45208, 56510, 67812, 84765, 113020, 135624, 169530, 175181, 226040, 339060, 350362, 525543, 678120, 700724, 875905, 1051086, 1401448, 1751810, 2102172, 2627715, 3503620, 4204344, 5255430, 7007240, 10510860, 21021720]

約数ペア:

[(1, 21021720), (2, 10510860), (3, 7007240), (4, 5255430), (5, 4204344), (6, 3503620), (8, 2627715), (10, 2102172), (12, 1751810), (15, 1401448), (20, 1051086), (24, 875905), (30, 700724), (31, 678120), (40, 525543), (60, 350362), (62, 339060), (93, 226040), (120, 175181), (124, 169530), (155, 135624), (186, 113020), (248, 84765), (310, 67812), (372, 56510), (465, 45208), (620, 33906), (744, 28255), (930, 22604), (1240, 16953), (1860, 11302), (3720, 5651)]