28718790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:317

約数の個数: 64

約数和(自身を含む): 71124480

約数和(自身を除く): 42405690

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 71, 97, 139, 142, 194, 213, 278, 291, 355, 417, 426, 485, 582, 695, 710, 834, 970, 1065, 1390, 1455, 2085, 2130, 2910, 4170, 6887, 9869, 13483, 13774, 19738, 20661, 26966, 29607, 34435, 40449, 41322, 49345, 59214, 67415, 68870, 80898, 98690, 103305, 134830, 148035, 202245, 206610, 296070, 404490, 957293, 1914586, 2871879, 4786465, 5743758, 9572930, 14359395, 28718790]

約数ペア:

[(1, 28718790), (2, 14359395), (3, 9572930), (5, 5743758), (6, 4786465), (10, 2871879), (15, 1914586), (30, 957293), (71, 404490), (97, 296070), (139, 206610), (142, 202245), (194, 148035), (213, 134830), (278, 103305), (291, 98690), (355, 80898), (417, 68870), (426, 67415), (485, 59214), (582, 49345), (695, 41322), (710, 40449), (834, 34435), (970, 29607), (1065, 26966), (1390, 20661), (1455, 19738), (2085, 13774), (2130, 13483), (2910, 9869), (4170, 6887)]