18478564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{317}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 37396800

約数和(自身を除く): 18918236

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 59, 76, 118, 236, 247, 317, 494, 634, 767, 988, 1121, 1268, 1534, 2242, 3068, 4121, 4484, 6023, 8242, 12046, 14573, 16484, 18703, 24092, 29146, 37406, 58292, 74812, 78299, 156598, 243139, 313196, 355357, 486278, 710714, 972556, 1421428, 4619641, 9239282, 18478564]

約数ペア:

[(1, 18478564), (2, 9239282), (4, 4619641), (13, 1421428), (19, 972556), (26, 710714), (38, 486278), (52, 355357), (59, 313196), (76, 243139), (118, 156598), (236, 78299), (247, 74812), (317, 58292), (494, 37406), (634, 29146), (767, 24092), (988, 18703), (1121, 16484), (1268, 14573), (1534, 12046), (2242, 8242), (3068, 6023), (4121, 4484)]