209866904

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1$

素因数の和:469

約数の個数: 96

約数和(自身を含む): 471964320

約数和(自身を除く): 262097416

約数列:

[1, 2, 4, 8, 13, 17, 23, 26, 34, 46, 52, 68, 92, 104, 136, 169, 184, 221, 299, 338, 391, 397, 442, 598, 676, 782, 794, 884, 1196, 1352, 1564, 1588, 1768, 2392, 2873, 3128, 3176, 3887, 5083, 5161, 5746, 6749, 7774, 9131, 10166, 10322, 11492, 13498, 15548, 18262, 20332, 20644, 22984, 26996, 31096, 36524, 40664, 41288, 53992, 66079, 67093, 73048, 87737, 118703, 132158, 134186, 155227, 175474, 237406, 264316, 268372, 310454, 350948, 474812, 528632, 536744, 620908, 701896, 949624, 1140581, 1241816, 1543139, 2017951, 2281162, 3086278, 4035902, 4562324, 6172556, 8071804, 9124648, 12345112, 16143608, 26233363, 52466726, 104933452, 209866904]

約数ペア:

[(1, 209866904), (2, 104933452), (4, 52466726), (8, 26233363), (13, 16143608), (17, 12345112), (23, 9124648), (26, 8071804), (34, 6172556), (46, 4562324), (52, 4035902), (68, 3086278), (92, 2281162), (104, 2017951), (136, 1543139), (169, 1241816), (184, 1140581), (221, 949624), (299, 701896), (338, 620908), (391, 536744), (397, 528632), (442, 474812), (598, 350948), (676, 310454), (782, 268372), (794, 264316), (884, 237406), (1196, 175474), (1352, 155227), (1564, 134186), (1588, 132158), (1768, 118703), (2392, 87737), (2873, 73048), (3128, 67093), (3176, 66079), (3887, 53992), (5083, 41288), (5161, 40664), (5746, 36524), (6749, 31096), (7774, 26996), (9131, 22984), (10166, 20644), (10322, 20332), (11492, 18262), (13498, 15548)]