18128812

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{311}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 18562388

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 59, 76, 118, 236, 247, 311, 494, 622, 767, 988, 1121, 1244, 1534, 2242, 3068, 4043, 4484, 5909, 8086, 11818, 14573, 16172, 18349, 23636, 29146, 36698, 58292, 73396, 76817, 153634, 238537, 307268, 348631, 477074, 697262, 954148, 1394524, 4532203, 9064406, 18128812]

約数ペア:

[(1, 18128812), (2, 9064406), (4, 4532203), (13, 1394524), (19, 954148), (26, 697262), (38, 477074), (52, 348631), (59, 307268), (76, 238537), (118, 153634), (236, 76817), (247, 73396), (311, 58292), (494, 36698), (622, 29146), (767, 23636), (988, 18349), (1121, 16172), (1244, 14573), (1534, 11818), (2242, 8086), (3068, 5909), (4043, 4484)]