21150440

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{2309}}^1$

素因数の和:2549

約数の個数: 32

約数和(自身を含む): 47817000

約数和(自身を除く): 26666560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 2290, 2309, 4580, 4618, 9160, 9236, 11545, 18472, 23090, 46180, 92360, 528761, 1057522, 2115044, 2643805, 4230088, 5287610, 10575220, 21150440]

約数ペア:

[(1, 21150440), (2, 10575220), (4, 5287610), (5, 4230088), (8, 2643805), (10, 2115044), (20, 1057522), (40, 528761), (229, 92360), (458, 46180), (916, 23090), (1145, 18472), (1832, 11545), (2290, 9236), (2309, 9160), (4580, 4618)]