40421840

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5209}}^1$

素因数の和:5319

約数の個数: 40

約数和(自身を含む): 94967880

約数和(自身を除く): 54546040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 3880, 5209, 7760, 10418, 20836, 26045, 41672, 52090, 83344, 104180, 208360, 416720, 505273, 1010546, 2021092, 2526365, 4042184, 5052730, 8084368, 10105460, 20210920, 40421840]

約数ペア:

[(1, 40421840), (2, 20210920), (4, 10105460), (5, 8084368), (8, 5052730), (10, 4042184), (16, 2526365), (20, 2021092), (40, 1010546), (80, 505273), (97, 416720), (194, 208360), (388, 104180), (485, 83344), (776, 52090), (970, 41672), (1552, 26045), (1940, 20836), (3880, 10418), (5209, 7760)]