401037880

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1\times {\mathrm{991}}^1$

素因数の和:1220

約数の個数: 64

約数和(自身を含む): 922798080

約数和(自身を除く): 521760200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 151, 268, 302, 335, 536, 604, 670, 755, 991, 1208, 1340, 1510, 1982, 2680, 3020, 3964, 4955, 6040, 7928, 9910, 10117, 19820, 20234, 39640, 40468, 50585, 66397, 80936, 101170, 132794, 149641, 202340, 265588, 299282, 331985, 404680, 531176, 598564, 663970, 748205, 1197128, 1327940, 1496410, 2655880, 2992820, 5985640, 10025947, 20051894, 40103788, 50129735, 80207576, 100259470, 200518940, 401037880]

約数ペア:

[(1, 401037880), (2, 200518940), (4, 100259470), (5, 80207576), (8, 50129735), (10, 40103788), (20, 20051894), (40, 10025947), (67, 5985640), (134, 2992820), (151, 2655880), (268, 1496410), (302, 1327940), (335, 1197128), (536, 748205), (604, 663970), (670, 598564), (755, 531176), (991, 404680), (1208, 331985), (1340, 299282), (1510, 265588), (1982, 202340), (2680, 149641), (3020, 132794), (3964, 101170), (4955, 80936), (6040, 66397), (7928, 50585), (9910, 40468), (10117, 39640), (19820, 20234)]