21956656

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{907}}^1$

素因数の和:1021

約数の個数: 40

約数和(自身を含む): 45599760

約数和(自身を除く): 23643104

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 89, 136, 178, 272, 356, 712, 907, 1424, 1513, 1814, 3026, 3628, 6052, 7256, 12104, 14512, 15419, 24208, 30838, 61676, 80723, 123352, 161446, 246704, 322892, 645784, 1291568, 1372291, 2744582, 5489164, 10978328, 21956656]

約数ペア:

[(1, 21956656), (2, 10978328), (4, 5489164), (8, 2744582), (16, 1372291), (17, 1291568), (34, 645784), (68, 322892), (89, 246704), (136, 161446), (178, 123352), (272, 80723), (356, 61676), (712, 30838), (907, 24208), (1424, 15419), (1513, 14512), (1814, 12104), (3026, 7256), (3628, 6052)]