20589616

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{761}}^1$

素因数の和:877

約数の個数: 40

約数和(自身を含む): 42519600

約数和(自身を除く): 21929984

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 89, 152, 178, 304, 356, 712, 761, 1424, 1522, 1691, 3044, 3382, 6088, 6764, 12176, 13528, 14459, 27056, 28918, 57836, 67729, 115672, 135458, 231344, 270916, 541832, 1083664, 1286851, 2573702, 5147404, 10294808, 20589616]

約数ペア:

[(1, 20589616), (2, 10294808), (4, 5147404), (8, 2573702), (16, 1286851), (19, 1083664), (38, 541832), (76, 270916), (89, 231344), (152, 135458), (178, 115672), (304, 67729), (356, 57836), (712, 28918), (761, 27056), (1424, 14459), (1522, 13528), (1691, 12176), (3044, 6764), (3382, 6088)]