18729440

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:196

約数の個数: 96

約数和(自身を含む): 47809440

約数和(自身を除く): 29080000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 61, 76, 80, 95, 101, 122, 152, 160, 190, 202, 244, 304, 305, 380, 404, 488, 505, 608, 610, 760, 808, 976, 1010, 1159, 1220, 1520, 1616, 1919, 1952, 2020, 2318, 2440, 3040, 3232, 3838, 4040, 4636, 4880, 5795, 6161, 7676, 8080, 9272, 9595, 9760, 11590, 12322, 15352, 16160, 18544, 19190, 23180, 24644, 30704, 30805, 37088, 38380, 46360, 49288, 61408, 61610, 76760, 92720, 98576, 117059, 123220, 153520, 185440, 197152, 234118, 246440, 307040, 468236, 492880, 585295, 936472, 985760, 1170590, 1872944, 2341180, 3745888, 4682360, 9364720, 18729440]

約数ペア:

[(1, 18729440), (2, 9364720), (4, 4682360), (5, 3745888), (8, 2341180), (10, 1872944), (16, 1170590), (19, 985760), (20, 936472), (32, 585295), (38, 492880), (40, 468236), (61, 307040), (76, 246440), (80, 234118), (95, 197152), (101, 185440), (122, 153520), (152, 123220), (160, 117059), (190, 98576), (202, 92720), (244, 76760), (304, 61610), (305, 61408), (380, 49288), (404, 46360), (488, 38380), (505, 37088), (608, 30805), (610, 30704), (760, 24644), (808, 23180), (976, 19190), (1010, 18544), (1159, 16160), (1220, 15352), (1520, 12322), (1616, 11590), (1919, 9760), (1952, 9595), (2020, 9272), (2318, 8080), (2440, 7676), (3040, 6161), (3232, 5795), (3838, 4880), (4040, 4636)]