20123016688

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{678731}}^1$

素因数の和:678865

約数の個数: 40

約数和(自身を含む): 41660570160

約数和(自身を除く): 21537553472

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 109, 136, 218, 272, 436, 872, 1744, 1853, 3706, 7412, 14824, 29648, 678731, 1357462, 2714924, 5429848, 10859696, 11538427, 23076854, 46153708, 73981679, 92307416, 147963358, 184614832, 295926716, 591853432, 1183706864, 1257688543, 2515377086, 5030754172, 10061508344, 20123016688]

約数ペア:

[(1, 20123016688), (2, 10061508344), (4, 5030754172), (8, 2515377086), (16, 1257688543), (17, 1183706864), (34, 591853432), (68, 295926716), (109, 184614832), (136, 147963358), (218, 92307416), (272, 73981679), (436, 46153708), (872, 23076854), (1744, 11538427), (1853, 10859696), (3706, 5429848), (7412, 2714924), (14824, 1357462), (29648, 678731)]