21459968

素因数分解:

$2^{10}\times {\mathrm{19}}^1\times {\mathrm{1103}}^1$

素因数の和:1142

約数の個数: 44

約数和(自身を含む): 45197760

約数和(自身を除く): 23737792

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 512, 608, 1024, 1103, 1216, 2206, 2432, 4412, 4864, 8824, 9728, 17648, 19456, 20957, 35296, 41914, 70592, 83828, 141184, 167656, 282368, 335312, 564736, 670624, 1129472, 1341248, 2682496, 5364992, 10729984, 21459968]

約数ペア:

[(1, 21459968), (2, 10729984), (4, 5364992), (8, 2682496), (16, 1341248), (19, 1129472), (32, 670624), (38, 564736), (64, 335312), (76, 282368), (128, 167656), (152, 141184), (256, 83828), (304, 70592), (512, 41914), (608, 35296), (1024, 20957), (1103, 19456), (1216, 17648), (2206, 9728), (2432, 8824), (4412, 4864)]