18660760

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 25403240

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 101, 124, 149, 155, 202, 248, 298, 310, 404, 505, 596, 620, 745, 808, 1010, 1192, 1240, 1490, 2020, 2980, 3131, 4040, 4619, 5960, 6262, 9238, 12524, 15049, 15655, 18476, 23095, 25048, 30098, 31310, 36952, 46190, 60196, 62620, 75245, 92380, 120392, 125240, 150490, 184760, 300980, 466519, 601960, 933038, 1866076, 2332595, 3732152, 4665190, 9330380, 18660760]

約数ペア:

[(1, 18660760), (2, 9330380), (4, 4665190), (5, 3732152), (8, 2332595), (10, 1866076), (20, 933038), (31, 601960), (40, 466519), (62, 300980), (101, 184760), (124, 150490), (149, 125240), (155, 120392), (202, 92380), (248, 75245), (298, 62620), (310, 60196), (404, 46190), (505, 36952), (596, 31310), (620, 30098), (745, 25048), (808, 23095), (1010, 18476), (1192, 15655), (1240, 15049), (1490, 12524), (2020, 9238), (2980, 6262), (3131, 5960), (4040, 4619)]