19556775

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{4139}}^1$

素因数の和:4165

約数の個数: 48

約数和(自身を含む): 41068800

約数和(自身を除く): 21512025

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 135, 175, 189, 225, 315, 525, 675, 945, 1575, 4139, 4725, 12417, 20695, 28973, 37251, 62085, 86919, 103475, 111753, 144865, 186255, 260757, 310425, 434595, 558765, 724325, 782271, 931275, 1303785, 2172975, 2793825, 3911355, 6518925, 19556775]

約数ペア:

[(1, 19556775), (3, 6518925), (5, 3911355), (7, 2793825), (9, 2172975), (15, 1303785), (21, 931275), (25, 782271), (27, 724325), (35, 558765), (45, 434595), (63, 310425), (75, 260757), (105, 186255), (135, 144865), (175, 111753), (189, 103475), (225, 86919), (315, 62085), (525, 37251), (675, 28973), (945, 20695), (1575, 12417), (4139, 4725)]