279331390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{69313}}^1$

素因数の和:69364

約数の個数: 32

約数和(自身を含む): 558948096

約数和(自身を除く): 279616706

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 69313, 138626, 346565, 693130, 901069, 1802138, 2148703, 4297406, 4505345, 9010690, 10743515, 21487030, 27933139, 55866278, 139665695, 279331390]

約数ペア:

[(1, 279331390), (2, 139665695), (5, 55866278), (10, 27933139), (13, 21487030), (26, 10743515), (31, 9010690), (62, 4505345), (65, 4297406), (130, 2148703), (155, 1802138), (310, 901069), (403, 693130), (806, 346565), (2015, 138626), (4030, 69313)]