80416840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{461}}^1$

素因数の和:575

約数の個数: 96

約数和(自身を含む): 213305400

約数和(自身を除く): 132888560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 89, 98, 140, 178, 196, 245, 280, 356, 392, 445, 461, 490, 623, 712, 890, 922, 980, 1246, 1780, 1844, 1960, 2305, 2492, 3115, 3227, 3560, 3688, 4361, 4610, 4984, 6230, 6454, 8722, 9220, 12460, 12908, 16135, 17444, 18440, 21805, 22589, 24920, 25816, 32270, 34888, 41029, 43610, 45178, 64540, 82058, 87220, 90356, 112945, 129080, 164116, 174440, 180712, 205145, 225890, 287203, 328232, 410290, 451780, 574406, 820580, 903560, 1148812, 1436015, 1641160, 2010421, 2297624, 2872030, 4020842, 5744060, 8041684, 10052105, 11488120, 16083368, 20104210, 40208420, 80416840]

約数ペア:

[(1, 80416840), (2, 40208420), (4, 20104210), (5, 16083368), (7, 11488120), (8, 10052105), (10, 8041684), (14, 5744060), (20, 4020842), (28, 2872030), (35, 2297624), (40, 2010421), (49, 1641160), (56, 1436015), (70, 1148812), (89, 903560), (98, 820580), (140, 574406), (178, 451780), (196, 410290), (245, 328232), (280, 287203), (356, 225890), (392, 205145), (445, 180712), (461, 174440), (490, 164116), (623, 129080), (712, 112945), (890, 90356), (922, 87220), (980, 82058), (1246, 64540), (1780, 45178), (1844, 43610), (1960, 41029), (2305, 34888), (2492, 32270), (3115, 25816), (3227, 24920), (3560, 22589), (3688, 21805), (4361, 18440), (4610, 17444), (4984, 16135), (6230, 12908), (6454, 12460), (8722, 9220)]