19701760

素因数分解:

$2^{13}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:81

約数の個数: 112

約数和(自身を含む): 52294536

約数和(自身を除く): 32592776

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 37, 40, 52, 64, 65, 74, 80, 104, 128, 130, 148, 160, 185, 208, 256, 260, 296, 320, 370, 416, 481, 512, 520, 592, 640, 740, 832, 962, 1024, 1040, 1184, 1280, 1480, 1664, 1924, 2048, 2080, 2368, 2405, 2560, 2960, 3328, 3848, 4096, 4160, 4736, 4810, 5120, 5920, 6656, 7696, 8192, 8320, 9472, 9620, 10240, 11840, 13312, 15392, 16640, 18944, 19240, 20480, 23680, 26624, 30784, 33280, 37888, 38480, 40960, 47360, 53248, 61568, 66560, 75776, 76960, 94720, 106496, 123136, 133120, 151552, 153920, 189440, 246272, 266240, 303104, 307840, 378880, 492544, 532480, 615680, 757760, 985088, 1231360, 1515520, 1970176, 2462720, 3940352, 4925440, 9850880, 19701760]

約数ペア:

[(1, 19701760), (2, 9850880), (4, 4925440), (5, 3940352), (8, 2462720), (10, 1970176), (13, 1515520), (16, 1231360), (20, 985088), (26, 757760), (32, 615680), (37, 532480), (40, 492544), (52, 378880), (64, 307840), (65, 303104), (74, 266240), (80, 246272), (104, 189440), (128, 153920), (130, 151552), (148, 133120), (160, 123136), (185, 106496), (208, 94720), (256, 76960), (260, 75776), (296, 66560), (320, 61568), (370, 53248), (416, 47360), (481, 40960), (512, 38480), (520, 37888), (592, 33280), (640, 30784), (740, 26624), (832, 23680), (962, 20480), (1024, 19240), (1040, 18944), (1184, 16640), (1280, 15392), (1480, 13312), (1664, 11840), (1924, 10240), (2048, 9620), (2080, 9472), (2368, 8320), (2405, 8192), (2560, 7696), (2960, 6656), (3328, 5920), (3848, 5120), (4096, 4810), (4160, 4736)]