201990512980

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{311}}^1\times {\mathrm{181421}}^1$

素因数の和:181920

約数の個数: 48

約数和(自身を含む): 427923699840

約数和(自身を除く): 225933186860

約数列:

[1, 2, 4, 5, 10, 20, 179, 311, 358, 622, 716, 895, 1244, 1555, 1790, 3110, 3580, 6220, 55669, 111338, 181421, 222676, 278345, 362842, 556690, 725684, 907105, 1113380, 1814210, 3628420, 32474359, 56421931, 64948718, 112843862, 129897436, 162371795, 225687724, 282109655, 324743590, 564219310, 649487180, 1128438620, 10099525649, 20199051298, 40398102596, 50497628245, 100995256490, 201990512980]

約数ペア:

[(1, 201990512980), (2, 100995256490), (4, 50497628245), (5, 40398102596), (10, 20199051298), (20, 10099525649), (179, 1128438620), (311, 649487180), (358, 564219310), (622, 324743590), (716, 282109655), (895, 225687724), (1244, 162371795), (1555, 129897436), (1790, 112843862), (3110, 64948718), (3580, 56421931), (6220, 32474359), (55669, 3628420), (111338, 1814210), (181421, 1113380), (222676, 907105), (278345, 725684), (362842, 556690)]