81810561

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1\times {\mathrm{541}}^1$

素因数の和:949

約数の個数: 32

約数和(自身を含む): 131814400

約数和(自身を除く): 50003839

約数列:

[1, 3, 7, 19, 21, 57, 133, 379, 399, 541, 1137, 1623, 2653, 3787, 7201, 7959, 10279, 11361, 21603, 30837, 50407, 71953, 151221, 205039, 215859, 615117, 1435273, 3895741, 4305819, 11687223, 27270187, 81810561]

約数ペア:

[(1, 81810561), (3, 27270187), (7, 11687223), (19, 4305819), (21, 3895741), (57, 1435273), (133, 615117), (379, 215859), (399, 205039), (541, 151221), (1137, 71953), (1623, 50407), (2653, 30837), (3787, 21603), (7201, 11361), (7959, 10279)]