31020255

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:181

約数の個数: 96

約数和(自身を含む): 66493440

約数和(自身を除く): 35473185

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 71, 73, 95, 105, 133, 171, 213, 219, 285, 315, 355, 365, 399, 497, 511, 639, 657, 665, 855, 1065, 1095, 1197, 1349, 1387, 1491, 1533, 1995, 2485, 2555, 3195, 3285, 4047, 4161, 4473, 4599, 5183, 5985, 6745, 6935, 7455, 7665, 9443, 9709, 12141, 12483, 15549, 20235, 20805, 22365, 22995, 25915, 28329, 29127, 36281, 46647, 47215, 48545, 60705, 62415, 77745, 84987, 87381, 98477, 108843, 141645, 145635, 181405, 233235, 295431, 326529, 424935, 436905, 492385, 544215, 689339, 886293, 1477155, 1632645, 2068017, 3446695, 4431465, 6204051, 10340085, 31020255]

約数ペア:

[(1, 31020255), (3, 10340085), (5, 6204051), (7, 4431465), (9, 3446695), (15, 2068017), (19, 1632645), (21, 1477155), (35, 886293), (45, 689339), (57, 544215), (63, 492385), (71, 436905), (73, 424935), (95, 326529), (105, 295431), (133, 233235), (171, 181405), (213, 145635), (219, 141645), (285, 108843), (315, 98477), (355, 87381), (365, 84987), (399, 77745), (497, 62415), (511, 60705), (639, 48545), (657, 47215), (665, 46647), (855, 36281), (1065, 29127), (1095, 28329), (1197, 25915), (1349, 22995), (1387, 22365), (1491, 20805), (1533, 20235), (1995, 15549), (2485, 12483), (2555, 12141), (3195, 9709), (3285, 9443), (4047, 7665), (4161, 7455), (4473, 6935), (4599, 6745), (5183, 5985)]