20155268

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{263}}^1$

素因数の和:321

約数の個数: 72

約数和(自身を含む): 45505152

約数和(自身を除く): 25349884

約数列:

[1, 2, 4, 7, 14, 17, 23, 28, 34, 46, 49, 68, 92, 98, 119, 161, 196, 238, 263, 322, 391, 476, 526, 644, 782, 833, 1052, 1127, 1564, 1666, 1841, 2254, 2737, 3332, 3682, 4471, 4508, 5474, 6049, 7364, 8942, 10948, 12098, 12887, 17884, 19159, 24196, 25774, 31297, 38318, 42343, 51548, 62594, 76636, 84686, 102833, 125188, 169372, 205666, 219079, 296401, 411332, 438158, 592802, 719831, 876316, 1185604, 1439662, 2879324, 5038817, 10077634, 20155268]

約数ペア:

[(1, 20155268), (2, 10077634), (4, 5038817), (7, 2879324), (14, 1439662), (17, 1185604), (23, 876316), (28, 719831), (34, 592802), (46, 438158), (49, 411332), (68, 296401), (92, 219079), (98, 205666), (119, 169372), (161, 125188), (196, 102833), (238, 84686), (263, 76636), (322, 62594), (391, 51548), (476, 42343), (526, 38318), (644, 31297), (782, 25774), (833, 24196), (1052, 19159), (1127, 17884), (1564, 12887), (1666, 12098), (1841, 10948), (2254, 8942), (2737, 7364), (3332, 6049), (3682, 5474), (4471, 4508)]