80556420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{191801}}^1$

素因数の和:191820

約数の個数: 48

約数和(自身を含む): 257781888

約数和(自身を除く): 177225468

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 191801, 383602, 575403, 767204, 959005, 1150806, 1342607, 1918010, 2301612, 2685214, 2877015, 3836020, 4027821, 5370428, 5754030, 6713035, 8055642, 11508060, 13426070, 16111284, 20139105, 26852140, 40278210, 80556420]

約数ペア:

[(1, 80556420), (2, 40278210), (3, 26852140), (4, 20139105), (5, 16111284), (6, 13426070), (7, 11508060), (10, 8055642), (12, 6713035), (14, 5754030), (15, 5370428), (20, 4027821), (21, 3836020), (28, 2877015), (30, 2685214), (35, 2301612), (42, 1918010), (60, 1342607), (70, 1150806), (84, 959005), (105, 767204), (140, 575403), (210, 383602), (420, 191801)]