19888820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7477}}^1$

素因数の和:7512

約数の個数: 48

約数和(自身を含む): 50252160

約数和(自身を除く): 30363340

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7477, 14954, 29908, 37385, 52339, 74770, 104678, 142063, 149540, 209356, 261695, 284126, 523390, 568252, 710315, 994441, 1046780, 1420630, 1988882, 2841260, 3977764, 4972205, 9944410, 19888820]

約数ペア:

[(1, 19888820), (2, 9944410), (4, 4972205), (5, 3977764), (7, 2841260), (10, 1988882), (14, 1420630), (19, 1046780), (20, 994441), (28, 710315), (35, 568252), (38, 523390), (70, 284126), (76, 261695), (95, 209356), (133, 149540), (140, 142063), (190, 104678), (266, 74770), (380, 52339), (532, 37385), (665, 29908), (1330, 14954), (2660, 7477)]