18985712

素因数分解:

$2^4\times {\mathrm{19}}^3\times {\mathrm{173}}^1$

素因数の和:238

約数の個数: 40

約数和(自身を含む): 39052560

約数和(自身を除く): 20066848

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 173, 304, 346, 361, 692, 722, 1384, 1444, 2768, 2888, 3287, 5776, 6574, 6859, 13148, 13718, 26296, 27436, 52592, 54872, 62453, 109744, 124906, 249812, 499624, 999248, 1186607, 2373214, 4746428, 9492856, 18985712]

約数ペア:

[(1, 18985712), (2, 9492856), (4, 4746428), (8, 2373214), (16, 1186607), (19, 999248), (38, 499624), (76, 249812), (152, 124906), (173, 109744), (304, 62453), (346, 54872), (361, 52592), (692, 27436), (722, 26296), (1384, 13718), (1444, 13148), (2768, 6859), (2888, 6574), (3287, 5776)]