20189421

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{2693}}^1$

素因数の和:2730

約数の個数: 36

約数和(自身を含む): 35932572

約数和(自身を除く): 15743151

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 357, 441, 833, 1071, 2499, 2693, 7497, 8079, 18851, 24237, 45781, 56553, 131957, 137343, 169659, 320467, 395871, 412029, 961401, 1187613, 2243269, 2884203, 6729807, 20189421]

約数ペア:

[(1, 20189421), (3, 6729807), (7, 2884203), (9, 2243269), (17, 1187613), (21, 961401), (49, 412029), (51, 395871), (63, 320467), (119, 169659), (147, 137343), (153, 131957), (357, 56553), (441, 45781), (833, 24237), (1071, 18851), (2499, 8079), (2693, 7497)]