20951344

素因数分解:

$2^4\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:262

約数の個数: 60

約数和(自身を含む): 45224784

約数和(自身を除く): 24273440

約数列:

[1, 2, 4, 8, 16, 17, 23, 34, 46, 68, 92, 136, 184, 197, 272, 289, 368, 391, 394, 578, 782, 788, 1156, 1564, 1576, 2312, 3128, 3152, 3349, 4531, 4624, 6256, 6647, 6698, 9062, 13294, 13396, 18124, 26588, 26792, 36248, 53176, 53584, 56933, 72496, 77027, 106352, 113866, 154054, 227732, 308108, 455464, 616216, 910928, 1232432, 1309459, 2618918, 5237836, 10475672, 20951344]

約数ペア:

[(1, 20951344), (2, 10475672), (4, 5237836), (8, 2618918), (16, 1309459), (17, 1232432), (23, 910928), (34, 616216), (46, 455464), (68, 308108), (92, 227732), (136, 154054), (184, 113866), (197, 106352), (272, 77027), (289, 72496), (368, 56933), (391, 53584), (394, 53176), (578, 36248), (782, 26792), (788, 26588), (1156, 18124), (1564, 13396), (1576, 13294), (2312, 9062), (3128, 6698), (3152, 6647), (3349, 6256), (4531, 4624)]