21854128

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:349

約数の個数: 40

約数和(自身を含む): 43524000

約数和(自身を除く): 21669872

約数列:

[1, 2, 4, 8, 16, 89, 103, 149, 178, 206, 298, 356, 412, 596, 712, 824, 1192, 1424, 1648, 2384, 9167, 13261, 15347, 18334, 26522, 30694, 36668, 53044, 61388, 73336, 106088, 122776, 146672, 212176, 245552, 1365883, 2731766, 5463532, 10927064, 21854128]

約数ペア:

[(1, 21854128), (2, 10927064), (4, 5463532), (8, 2731766), (16, 1365883), (89, 245552), (103, 212176), (149, 146672), (178, 122776), (206, 106088), (298, 73336), (356, 61388), (412, 53044), (596, 36668), (712, 30694), (824, 26522), (1192, 18334), (1424, 15347), (1648, 13261), (2384, 9167)]