80140940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4093}}^1$

素因数の和:4202

約数の個数: 48

約数和(自身を含む): 185703840

約数和(自身を除く): 105562900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3916, 4093, 4895, 8186, 9790, 16372, 19580, 20465, 40930, 45023, 81860, 90046, 180092, 225115, 364277, 450230, 728554, 900460, 1457108, 1821385, 3642770, 4007047, 7285540, 8014094, 16028188, 20035235, 40070470, 80140940]

約数ペア:

[(1, 80140940), (2, 40070470), (4, 20035235), (5, 16028188), (10, 8014094), (11, 7285540), (20, 4007047), (22, 3642770), (44, 1821385), (55, 1457108), (89, 900460), (110, 728554), (178, 450230), (220, 364277), (356, 225115), (445, 180092), (890, 90046), (979, 81860), (1780, 45023), (1958, 40930), (3916, 20465), (4093, 19580), (4895, 16372), (8186, 9790)]