19485440

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1171}}^1$

素因数の和:1205

約数の個数: 72

約数和(自身を含む): 50306928

約数和(自身を除く): 30821488

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1171, 1280, 1664, 2080, 2342, 3328, 4160, 4684, 5855, 8320, 9368, 11710, 15223, 16640, 18736, 23420, 30446, 37472, 46840, 60892, 74944, 76115, 93680, 121784, 149888, 152230, 187360, 243568, 299776, 304460, 374720, 487136, 608920, 749440, 974272, 1217840, 1498880, 1948544, 2435680, 3897088, 4871360, 9742720, 19485440]

約数ペア:

[(1, 19485440), (2, 9742720), (4, 4871360), (5, 3897088), (8, 2435680), (10, 1948544), (13, 1498880), (16, 1217840), (20, 974272), (26, 749440), (32, 608920), (40, 487136), (52, 374720), (64, 304460), (65, 299776), (80, 243568), (104, 187360), (128, 152230), (130, 149888), (160, 121784), (208, 93680), (256, 76115), (260, 74944), (320, 60892), (416, 46840), (520, 37472), (640, 30446), (832, 23420), (1040, 18736), (1171, 16640), (1280, 15223), (1664, 11710), (2080, 9368), (2342, 8320), (3328, 5855), (4160, 4684)]