21793408

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1871}}^1$

素因数の和:1905

約数の個数: 64

約数和(自身を含む): 53464320

約数和(自身を除く): 31670912

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 182, 208, 224, 364, 416, 448, 728, 832, 896, 1456, 1664, 1871, 2912, 3742, 5824, 7484, 11648, 13097, 14968, 24323, 26194, 29936, 48646, 52388, 59872, 97292, 104776, 119744, 170261, 194584, 209552, 239488, 340522, 389168, 419104, 681044, 778336, 838208, 1362088, 1556672, 1676416, 2724176, 3113344, 5448352, 10896704, 21793408]

約数ペア:

[(1, 21793408), (2, 10896704), (4, 5448352), (7, 3113344), (8, 2724176), (13, 1676416), (14, 1556672), (16, 1362088), (26, 838208), (28, 778336), (32, 681044), (52, 419104), (56, 389168), (64, 340522), (91, 239488), (104, 209552), (112, 194584), (128, 170261), (182, 119744), (208, 104776), (224, 97292), (364, 59872), (416, 52388), (448, 48646), (728, 29936), (832, 26194), (896, 24323), (1456, 14968), (1664, 13097), (1871, 11648), (2912, 7484), (3742, 5824)]