209550640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{201491}}^1$

素因数の和:201517

約数の個数: 40

約数和(自身を含む): 524685168

約数和(自身を除く): 315134528

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 201491, 402982, 805964, 1007455, 1611928, 2014910, 2619383, 3223856, 4029820, 5238766, 8059640, 10477532, 13096915, 16119280, 20955064, 26193830, 41910128, 52387660, 104775320, 209550640]

約数ペア:

[(1, 209550640), (2, 104775320), (4, 52387660), (5, 41910128), (8, 26193830), (10, 20955064), (13, 16119280), (16, 13096915), (20, 10477532), (26, 8059640), (40, 5238766), (52, 4029820), (65, 3223856), (80, 2619383), (104, 2014910), (130, 1611928), (208, 1007455), (260, 805964), (520, 402982), (1040, 201491)]