28416856

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 61538400

約数和(自身を除く): 33121544

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 73, 76, 104, 146, 152, 197, 247, 292, 394, 494, 584, 788, 949, 988, 1387, 1576, 1898, 1976, 2561, 2774, 3743, 3796, 5122, 5548, 7486, 7592, 10244, 11096, 14381, 14972, 18031, 20488, 28762, 29944, 36062, 48659, 57524, 72124, 97318, 115048, 144248, 186953, 194636, 273239, 373906, 389272, 546478, 747812, 1092956, 1495624, 2185912, 3552107, 7104214, 14208428, 28416856]

約数ペア:

[(1, 28416856), (2, 14208428), (4, 7104214), (8, 3552107), (13, 2185912), (19, 1495624), (26, 1092956), (38, 747812), (52, 546478), (73, 389272), (76, 373906), (104, 273239), (146, 194636), (152, 186953), (197, 144248), (247, 115048), (292, 97318), (394, 72124), (494, 57524), (584, 48659), (788, 36062), (949, 29944), (988, 28762), (1387, 20488), (1576, 18031), (1898, 14972), (1976, 14381), (2561, 11096), (2774, 10244), (3743, 7592), (3796, 7486), (5122, 5548)]