19620825

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{281}}^1$

素因数の和:327

約数の個数: 72

約数和(自身を含む): 39863520

約数和(自身を除く): 20242695

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 49, 57, 75, 95, 105, 133, 147, 175, 245, 281, 285, 399, 475, 525, 665, 735, 843, 931, 1225, 1405, 1425, 1967, 1995, 2793, 3325, 3675, 4215, 4655, 5339, 5901, 7025, 9835, 9975, 13769, 13965, 16017, 21075, 23275, 26695, 29505, 37373, 41307, 49175, 68845, 69825, 80085, 112119, 133475, 147525, 186865, 206535, 261611, 344225, 400425, 560595, 784833, 934325, 1032675, 1308055, 2802975, 3924165, 6540275, 19620825]

約数ペア:

[(1, 19620825), (3, 6540275), (5, 3924165), (7, 2802975), (15, 1308055), (19, 1032675), (21, 934325), (25, 784833), (35, 560595), (49, 400425), (57, 344225), (75, 261611), (95, 206535), (105, 186865), (133, 147525), (147, 133475), (175, 112119), (245, 80085), (281, 69825), (285, 68845), (399, 49175), (475, 41307), (525, 37373), (665, 29505), (735, 26695), (843, 23275), (931, 21075), (1225, 16017), (1405, 13965), (1425, 13769), (1967, 9975), (1995, 9835), (2793, 7025), (3325, 5901), (3675, 5339), (4215, 4655)]