209745920

素因数分解:

$2^{11}\times 5^1\times {\mathrm{20483}}^1$

素因数の和:20510

約数の個数: 48

約数和(自身を含む): 503291880

約数和(自身を除く): 293545960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 5120, 10240, 20483, 40966, 81932, 102415, 163864, 204830, 327728, 409660, 655456, 819320, 1310912, 1638640, 2621824, 3277280, 5243648, 6554560, 10487296, 13109120, 20974592, 26218240, 41949184, 52436480, 104872960, 209745920]

約数ペア:

[(1, 209745920), (2, 104872960), (4, 52436480), (5, 41949184), (8, 26218240), (10, 20974592), (16, 13109120), (20, 10487296), (32, 6554560), (40, 5243648), (64, 3277280), (80, 2621824), (128, 1638640), (160, 1310912), (256, 819320), (320, 655456), (512, 409660), (640, 327728), (1024, 204830), (1280, 163864), (2048, 102415), (2560, 81932), (5120, 40966), (10240, 20483)]