12920960

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1553}}^1$

素因数の和:1585

約数の個数: 64

約数和(自身を含む): 33286680

約数和(自身を除く): 20365720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1553, 1664, 2080, 3106, 4160, 6212, 7765, 8320, 12424, 15530, 20189, 24848, 31060, 40378, 49696, 62120, 80756, 99392, 100945, 124240, 161512, 198784, 201890, 248480, 323024, 403780, 496960, 646048, 807560, 993920, 1292096, 1615120, 2584192, 3230240, 6460480, 12920960]

約数ペア:

[(1, 12920960), (2, 6460480), (4, 3230240), (5, 2584192), (8, 1615120), (10, 1292096), (13, 993920), (16, 807560), (20, 646048), (26, 496960), (32, 403780), (40, 323024), (52, 248480), (64, 201890), (65, 198784), (80, 161512), (104, 124240), (128, 100945), (130, 99392), (160, 80756), (208, 62120), (260, 49696), (320, 40378), (416, 31060), (520, 24848), (640, 20189), (832, 15530), (1040, 12424), (1553, 8320), (1664, 7765), (2080, 6212), (3106, 4160)]