16621780

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{2423}}^1$

素因数の和:2453

約数の個数: 48

約数和(自身を含む): 40723200

約数和(自身を除く): 24101420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 2423, 3430, 4846, 6860, 9692, 12115, 16961, 24230, 33922, 48460, 67844, 84805, 118727, 169610, 237454, 339220, 474908, 593635, 831089, 1187270, 1662178, 2374540, 3324356, 4155445, 8310890, 16621780]

約数ペア:

[(1, 16621780), (2, 8310890), (4, 4155445), (5, 3324356), (7, 2374540), (10, 1662178), (14, 1187270), (20, 831089), (28, 593635), (35, 474908), (49, 339220), (70, 237454), (98, 169610), (140, 118727), (196, 84805), (245, 67844), (343, 48460), (490, 33922), (686, 24230), (980, 16961), (1372, 12115), (1715, 9692), (2423, 6860), (3430, 4846)]