21564344

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{977}}^1$

素因数の和:1103

約数の個数: 32

約数和(自身を含む): 42249600

約数和(自身を除く): 20685256

約数列:

[1, 2, 4, 8, 31, 62, 89, 124, 178, 248, 356, 712, 977, 1954, 2759, 3908, 5518, 7816, 11036, 22072, 30287, 60574, 86953, 121148, 173906, 242296, 347812, 695624, 2695543, 5391086, 10782172, 21564344]

約数ペア:

[(1, 21564344), (2, 10782172), (4, 5391086), (8, 2695543), (31, 695624), (62, 347812), (89, 242296), (124, 173906), (178, 121148), (248, 86953), (356, 60574), (712, 30287), (977, 22072), (1954, 11036), (2759, 7816), (3908, 5518)]