643968

素因数分解:

$2^7\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1$

素因数の和:76

約数の個数: 96

約数和(自身を含む): 2042040

約数和(自身を除く): 1398072

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 43, 48, 52, 64, 72, 78, 86, 96, 104, 117, 128, 129, 144, 156, 172, 192, 208, 234, 258, 288, 312, 344, 384, 387, 416, 468, 516, 559, 576, 624, 688, 774, 832, 936, 1032, 1118, 1152, 1248, 1376, 1548, 1664, 1677, 1872, 2064, 2236, 2496, 2752, 3096, 3354, 3744, 4128, 4472, 4992, 5031, 5504, 6192, 6708, 7488, 8256, 8944, 10062, 12384, 13416, 14976, 16512, 17888, 20124, 24768, 26832, 35776, 40248, 49536, 53664, 71552, 80496, 107328, 160992, 214656, 321984, 643968]

約数ペア:

[(1, 643968), (2, 321984), (3, 214656), (4, 160992), (6, 107328), (8, 80496), (9, 71552), (12, 53664), (13, 49536), (16, 40248), (18, 35776), (24, 26832), (26, 24768), (32, 20124), (36, 17888), (39, 16512), (43, 14976), (48, 13416), (52, 12384), (64, 10062), (72, 8944), (78, 8256), (86, 7488), (96, 6708), (104, 6192), (117, 5504), (128, 5031), (129, 4992), (144, 4472), (156, 4128), (172, 3744), (192, 3354), (208, 3096), (234, 2752), (258, 2496), (288, 2236), (312, 2064), (344, 1872), (384, 1677), (387, 1664), (416, 1548), (468, 1376), (516, 1248), (559, 1152), (576, 1118), (624, 1032), (688, 936), (774, 832)]