20189440

素因数分解:

$2^8\times 5^1\times {\mathrm{15773}}^1$

素因数の和:15794

約数の個数: 36

約数和(自身を含む): 48363084

約数和(自身を除く): 28173644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15773, 31546, 63092, 78865, 126184, 157730, 252368, 315460, 504736, 630920, 1009472, 1261840, 2018944, 2523680, 4037888, 5047360, 10094720, 20189440]

約数ペア:

[(1, 20189440), (2, 10094720), (4, 5047360), (5, 4037888), (8, 2523680), (10, 2018944), (16, 1261840), (20, 1009472), (32, 630920), (40, 504736), (64, 315460), (80, 252368), (128, 157730), (160, 126184), (256, 78865), (320, 63092), (640, 31546), (1280, 15773)]