71388680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1823}}^1$

素因数の和:1934

約数の個数: 64

約数和(自身を含む): 177292800

約数和(自身を除く): 105904120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 110, 178, 220, 356, 440, 445, 712, 890, 979, 1780, 1823, 1958, 3560, 3646, 3916, 4895, 7292, 7832, 9115, 9790, 14584, 18230, 19580, 20053, 36460, 39160, 40106, 72920, 80212, 100265, 160424, 162247, 200530, 324494, 401060, 648988, 802120, 811235, 1297976, 1622470, 1784717, 3244940, 3569434, 6489880, 7138868, 8923585, 14277736, 17847170, 35694340, 71388680]

約数ペア:

[(1, 71388680), (2, 35694340), (4, 17847170), (5, 14277736), (8, 8923585), (10, 7138868), (11, 6489880), (20, 3569434), (22, 3244940), (40, 1784717), (44, 1622470), (55, 1297976), (88, 811235), (89, 802120), (110, 648988), (178, 401060), (220, 324494), (356, 200530), (440, 162247), (445, 160424), (712, 100265), (890, 80212), (979, 72920), (1780, 40106), (1823, 39160), (1958, 36460), (3560, 20053), (3646, 19580), (3916, 18230), (4895, 14584), (7292, 9790), (7832, 9115)]