19861840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{179}}^1$

素因数の和:284

約数の個数: 80

約数和(自身を含む): 49550400

約数和(自身を除く): 29688560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 73, 76, 80, 95, 146, 152, 179, 190, 292, 304, 358, 365, 380, 584, 716, 730, 760, 895, 1168, 1387, 1432, 1460, 1520, 1790, 2774, 2864, 2920, 3401, 3580, 5548, 5840, 6802, 6935, 7160, 11096, 13067, 13604, 13870, 14320, 17005, 22192, 26134, 27208, 27740, 34010, 52268, 54416, 55480, 65335, 68020, 104536, 110960, 130670, 136040, 209072, 248273, 261340, 272080, 496546, 522680, 993092, 1045360, 1241365, 1986184, 2482730, 3972368, 4965460, 9930920, 19861840]

約数ペア:

[(1, 19861840), (2, 9930920), (4, 4965460), (5, 3972368), (8, 2482730), (10, 1986184), (16, 1241365), (19, 1045360), (20, 993092), (38, 522680), (40, 496546), (73, 272080), (76, 261340), (80, 248273), (95, 209072), (146, 136040), (152, 130670), (179, 110960), (190, 104536), (292, 68020), (304, 65335), (358, 55480), (365, 54416), (380, 52268), (584, 34010), (716, 27740), (730, 27208), (760, 26134), (895, 22192), (1168, 17005), (1387, 14320), (1432, 13870), (1460, 13604), (1520, 13067), (1790, 11096), (2774, 7160), (2864, 6935), (2920, 6802), (3401, 5840), (3580, 5548)]