18499840

素因数分解:

$2^8\times 5^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:267

約数の個数: 72

約数和(自身を含む): 45070200

約数和(自身を除く): 26570360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 128, 149, 160, 194, 256, 298, 320, 388, 485, 596, 640, 745, 776, 970, 1192, 1280, 1490, 1552, 1940, 2384, 2980, 3104, 3880, 4768, 5960, 6208, 7760, 9536, 11920, 12416, 14453, 15520, 19072, 23840, 24832, 28906, 31040, 38144, 47680, 57812, 62080, 72265, 95360, 115624, 124160, 144530, 190720, 231248, 289060, 462496, 578120, 924992, 1156240, 1849984, 2312480, 3699968, 4624960, 9249920, 18499840]

約数ペア:

[(1, 18499840), (2, 9249920), (4, 4624960), (5, 3699968), (8, 2312480), (10, 1849984), (16, 1156240), (20, 924992), (32, 578120), (40, 462496), (64, 289060), (80, 231248), (97, 190720), (128, 144530), (149, 124160), (160, 115624), (194, 95360), (256, 72265), (298, 62080), (320, 57812), (388, 47680), (485, 38144), (596, 31040), (640, 28906), (745, 24832), (776, 23840), (970, 19072), (1192, 15520), (1280, 14453), (1490, 12416), (1552, 11920), (1940, 9536), (2384, 7760), (2980, 6208), (3104, 5960), (3880, 4768)]