21155968

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{8699}}^1$

素因数の和:8732

約数の個数: 32

約数和(自身を含む): 44370000

約数和(自身を除く): 23214032

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 304, 608, 1216, 2432, 8699, 17398, 34796, 69592, 139184, 165281, 278368, 330562, 556736, 661124, 1113472, 1322248, 2644496, 5288992, 10577984, 21155968]

約数ペア:

[(1, 21155968), (2, 10577984), (4, 5288992), (8, 2644496), (16, 1322248), (19, 1113472), (32, 661124), (38, 556736), (64, 330562), (76, 278368), (128, 165281), (152, 139184), (304, 69592), (608, 34796), (1216, 17398), (2432, 8699)]