21034480

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{1091}}^1$

素因数の和:1345

約数の個数: 40

約数和(自身を含む): 49153104

約数和(自身を除く): 28118624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 1091, 1205, 1928, 2182, 2410, 3856, 4364, 4820, 5455, 8728, 9640, 10910, 17456, 19280, 21820, 43640, 87280, 262931, 525862, 1051724, 1314655, 2103448, 2629310, 4206896, 5258620, 10517240, 21034480]

約数ペア:

[(1, 21034480), (2, 10517240), (4, 5258620), (5, 4206896), (8, 2629310), (10, 2103448), (16, 1314655), (20, 1051724), (40, 525862), (80, 262931), (241, 87280), (482, 43640), (964, 21820), (1091, 19280), (1205, 17456), (1928, 10910), (2182, 9640), (2410, 8728), (3856, 5455), (4364, 4820)]