18807520

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:164

約数の個数: 96

約数和(自身を含む): 47246976

約数和(自身を除く): 28439456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 47, 61, 80, 82, 94, 122, 160, 164, 188, 205, 235, 244, 305, 328, 376, 410, 470, 488, 610, 656, 752, 820, 940, 976, 1220, 1312, 1504, 1640, 1880, 1927, 1952, 2440, 2501, 2867, 3280, 3760, 3854, 4880, 5002, 5734, 6560, 7520, 7708, 9635, 9760, 10004, 11468, 12505, 14335, 15416, 19270, 20008, 22936, 25010, 28670, 30832, 38540, 40016, 45872, 50020, 57340, 61664, 77080, 80032, 91744, 100040, 114680, 117547, 154160, 200080, 229360, 235094, 308320, 400160, 458720, 470188, 587735, 940376, 1175470, 1880752, 2350940, 3761504, 4701880, 9403760, 18807520]

約数ペア:

[(1, 18807520), (2, 9403760), (4, 4701880), (5, 3761504), (8, 2350940), (10, 1880752), (16, 1175470), (20, 940376), (32, 587735), (40, 470188), (41, 458720), (47, 400160), (61, 308320), (80, 235094), (82, 229360), (94, 200080), (122, 154160), (160, 117547), (164, 114680), (188, 100040), (205, 91744), (235, 80032), (244, 77080), (305, 61664), (328, 57340), (376, 50020), (410, 45872), (470, 40016), (488, 38540), (610, 30832), (656, 28670), (752, 25010), (820, 22936), (940, 20008), (976, 19270), (1220, 15416), (1312, 14335), (1504, 12505), (1640, 11468), (1880, 10004), (1927, 9760), (1952, 9635), (2440, 7708), (2501, 7520), (2867, 6560), (3280, 5734), (3760, 5002), (3854, 4880)]