391321970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{9679}}^1$

素因数の和:10010

約数の個数: 32

約数和(自身を含む): 761080320

約数和(自身を除く): 369758350

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 311, 622, 1555, 3110, 4043, 8086, 9679, 19358, 20215, 40430, 48395, 96790, 125827, 251654, 629135, 1258270, 3010169, 6020338, 15050845, 30101690, 39132197, 78264394, 195660985, 391321970]

約数ペア:

[(1, 391321970), (2, 195660985), (5, 78264394), (10, 39132197), (13, 30101690), (26, 15050845), (65, 6020338), (130, 3010169), (311, 1258270), (622, 629135), (1555, 251654), (3110, 125827), (4043, 96790), (8086, 48395), (9679, 40430), (19358, 20215)]