21042528

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^2\times {\mathrm{1297}}^1$

素因数の和:1336

約数の個数: 72

約数和(自身を含む): 59858568

約数和(自身を除く): 38816040

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 169, 208, 312, 338, 416, 507, 624, 676, 1014, 1248, 1297, 1352, 2028, 2594, 2704, 3891, 4056, 5188, 5408, 7782, 8112, 10376, 15564, 16224, 16861, 20752, 31128, 33722, 41504, 50583, 62256, 67444, 101166, 124512, 134888, 202332, 219193, 269776, 404664, 438386, 539552, 657579, 809328, 876772, 1315158, 1618656, 1753544, 2630316, 3507088, 5260632, 7014176, 10521264, 21042528]

約数ペア:

[(1, 21042528), (2, 10521264), (3, 7014176), (4, 5260632), (6, 3507088), (8, 2630316), (12, 1753544), (13, 1618656), (16, 1315158), (24, 876772), (26, 809328), (32, 657579), (39, 539552), (48, 438386), (52, 404664), (78, 269776), (96, 219193), (104, 202332), (156, 134888), (169, 124512), (208, 101166), (312, 67444), (338, 62256), (416, 50583), (507, 41504), (624, 33722), (676, 31128), (1014, 20752), (1248, 16861), (1297, 16224), (1352, 15564), (2028, 10376), (2594, 8112), (2704, 7782), (3891, 5408), (4056, 5188)]