20563472

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1$

素因数の和:240

約数の個数: 80

約数和(自身を含む): 46604160

約数和(自身を除く): 26040688

約数列:

[1, 2, 4, 8, 16, 17, 19, 23, 34, 38, 46, 68, 76, 92, 136, 152, 173, 184, 272, 304, 323, 346, 368, 391, 437, 646, 692, 782, 874, 1292, 1384, 1564, 1748, 2584, 2768, 2941, 3128, 3287, 3496, 3979, 5168, 5882, 6256, 6574, 6992, 7429, 7958, 11764, 13148, 14858, 15916, 23528, 26296, 29716, 31832, 47056, 52592, 55879, 59432, 63664, 67643, 75601, 111758, 118864, 135286, 151202, 223516, 270572, 302404, 447032, 541144, 604808, 894064, 1082288, 1209616, 1285217, 2570434, 5140868, 10281736, 20563472]

約数ペア:

[(1, 20563472), (2, 10281736), (4, 5140868), (8, 2570434), (16, 1285217), (17, 1209616), (19, 1082288), (23, 894064), (34, 604808), (38, 541144), (46, 447032), (68, 302404), (76, 270572), (92, 223516), (136, 151202), (152, 135286), (173, 118864), (184, 111758), (272, 75601), (304, 67643), (323, 63664), (346, 59432), (368, 55879), (391, 52592), (437, 47056), (646, 31832), (692, 29716), (782, 26296), (874, 23528), (1292, 15916), (1384, 14858), (1564, 13148), (1748, 11764), (2584, 7958), (2768, 7429), (2941, 6992), (3128, 6574), (3287, 6256), (3496, 5882), (3979, 5168)]