21000228128

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{907}}^1\times {\mathrm{65777}}^1$

素因数の和:66705

約数の個数: 48

約数和(自身を含む): 45153176544

約数和(自身を除く): 24152948416

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 352, 907, 1814, 3628, 7256, 9977, 14512, 19954, 29024, 39908, 65777, 79816, 131554, 159632, 263108, 319264, 526216, 723547, 1052432, 1447094, 2104864, 2894188, 5788376, 11576752, 23153504, 59659739, 119319478, 238638956, 477277912, 656257129, 954555824, 1312514258, 1909111648, 2625028516, 5250057032, 10500114064, 21000228128]

約数ペア:

[(1, 21000228128), (2, 10500114064), (4, 5250057032), (8, 2625028516), (11, 1909111648), (16, 1312514258), (22, 954555824), (32, 656257129), (44, 477277912), (88, 238638956), (176, 119319478), (352, 59659739), (907, 23153504), (1814, 11576752), (3628, 5788376), (7256, 2894188), (9977, 2104864), (14512, 1447094), (19954, 1052432), (29024, 723547), (39908, 526216), (65777, 319264), (79816, 263108), (131554, 159632)]