21695443

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 28569600

約数和(自身を除く): 6874157

約数列:

[1, 7, 11, 31, 61, 77, 149, 217, 341, 427, 671, 1043, 1639, 1891, 2387, 4619, 4697, 9089, 11473, 13237, 20801, 32333, 50809, 63623, 99979, 145607, 281759, 355663, 699853, 1972313, 3099349, 21695443]

約数ペア:

[(1, 21695443), (7, 3099349), (11, 1972313), (31, 699853), (61, 355663), (77, 281759), (149, 145607), (217, 99979), (341, 63623), (427, 50809), (671, 32333), (1043, 20801), (1639, 13237), (1891, 11473), (2387, 9089), (4619, 4697)]