19702540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^2$

素因数の和:199

約数の個数: 72

約数和(自身を含む): 49201488

約数和(自身を除く): 29498948

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 83, 110, 130, 143, 166, 220, 260, 286, 332, 415, 572, 715, 830, 913, 1079, 1430, 1660, 1826, 2158, 2860, 3652, 4316, 4565, 5395, 6889, 9130, 10790, 11869, 13778, 18260, 21580, 23738, 27556, 34445, 47476, 59345, 68890, 75779, 89557, 118690, 137780, 151558, 179114, 237380, 303116, 358228, 378895, 447785, 757790, 895570, 985127, 1515580, 1791140, 1970254, 3940508, 4925635, 9851270, 19702540]

約数ペア:

[(1, 19702540), (2, 9851270), (4, 4925635), (5, 3940508), (10, 1970254), (11, 1791140), (13, 1515580), (20, 985127), (22, 895570), (26, 757790), (44, 447785), (52, 378895), (55, 358228), (65, 303116), (83, 237380), (110, 179114), (130, 151558), (143, 137780), (166, 118690), (220, 89557), (260, 75779), (286, 68890), (332, 59345), (415, 47476), (572, 34445), (715, 27556), (830, 23738), (913, 21580), (1079, 18260), (1430, 13778), (1660, 11869), (1826, 10790), (2158, 9130), (2860, 6889), (3652, 5395), (4316, 4565)]