21307864

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{167}}^1\times {\mathrm{389}}^1$

素因数の和:603

約数の個数: 32

約数和(自身を含む): 41277600

約数和(自身を除く): 19969736

約数列:

[1, 2, 4, 8, 41, 82, 164, 167, 328, 334, 389, 668, 778, 1336, 1556, 3112, 6847, 13694, 15949, 27388, 31898, 54776, 63796, 64963, 127592, 129926, 259852, 519704, 2663483, 5326966, 10653932, 21307864]

約数ペア:

[(1, 21307864), (2, 10653932), (4, 5326966), (8, 2663483), (41, 519704), (82, 259852), (164, 129926), (167, 127592), (328, 64963), (334, 63796), (389, 54776), (668, 31898), (778, 27388), (1336, 15949), (1556, 13694), (3112, 6847)]