123943720

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{16223}}^1$

素因数の和:16425

約数の個数: 32

約数和(自身を含む): 280350720

約数和(自身を除く): 156407000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 3820, 7640, 16223, 32446, 64892, 81115, 129784, 162230, 324460, 648920, 3098593, 6197186, 12394372, 15492965, 24788744, 30985930, 61971860, 123943720]

約数ペア:

[(1, 123943720), (2, 61971860), (4, 30985930), (5, 24788744), (8, 15492965), (10, 12394372), (20, 6197186), (40, 3098593), (191, 648920), (382, 324460), (764, 162230), (955, 129784), (1528, 81115), (1910, 64892), (3820, 32446), (7640, 16223)]