1284920240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{518113}}^1$

素因数の和:518157

約数の個数: 40

約数和(自身を含む): 3083814528

約数和(自身を除く): 1798894288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 518113, 1036226, 2072452, 2590565, 4144904, 5181130, 8289808, 10362260, 16061503, 20724520, 32123006, 41449040, 64246012, 80307515, 128492024, 160615030, 256984048, 321230060, 642460120, 1284920240]

約数ペア:

[(1, 1284920240), (2, 642460120), (4, 321230060), (5, 256984048), (8, 160615030), (10, 128492024), (16, 80307515), (20, 64246012), (31, 41449040), (40, 32123006), (62, 20724520), (80, 16061503), (124, 10362260), (155, 8289808), (248, 5181130), (310, 4144904), (496, 2590565), (620, 2072452), (1240, 1036226), (2480, 518113)]