401080720

素因数分解:

$2^4\times 5^1\times {\mathrm{2003}}^1\times {\mathrm{2503}}^1$

素因数の和:4519

約数の個数: 40

約数和(自身を含む): 933350976

約数和(自身を除く): 532270256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2003, 2503, 4006, 5006, 8012, 10012, 10015, 12515, 16024, 20024, 20030, 25030, 32048, 40048, 40060, 50060, 80120, 100120, 160240, 200240, 5013509, 10027018, 20054036, 25067545, 40108072, 50135090, 80216144, 100270180, 200540360, 401080720]

約数ペア:

[(1, 401080720), (2, 200540360), (4, 100270180), (5, 80216144), (8, 50135090), (10, 40108072), (16, 25067545), (20, 20054036), (40, 10027018), (80, 5013509), (2003, 200240), (2503, 160240), (4006, 100120), (5006, 80120), (8012, 50060), (10012, 40060), (10015, 40048), (12515, 32048), (16024, 25030), (20024, 20030)]