21031990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{5669}}^1$

素因数の和:5736

約数の個数: 32

約数和(自身を含む): 44089920

約数和(自身を除く): 23057930

約数列:

[1, 2, 5, 7, 10, 14, 35, 53, 70, 106, 265, 371, 530, 742, 1855, 3710, 5669, 11338, 28345, 39683, 56690, 79366, 198415, 300457, 396830, 600914, 1502285, 2103199, 3004570, 4206398, 10515995, 21031990]

約数ペア:

[(1, 21031990), (2, 10515995), (5, 4206398), (7, 3004570), (10, 2103199), (14, 1502285), (35, 600914), (53, 396830), (70, 300457), (106, 198415), (265, 79366), (371, 56690), (530, 39683), (742, 28345), (1855, 11338), (3710, 5669)]