20793680

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4261}}^1$

素因数の和:4335

約数の個数: 40

約数和(自身を含む): 49149384

約数和(自身を除く): 28355704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4261, 4880, 8522, 17044, 21305, 34088, 42610, 68176, 85220, 170440, 259921, 340880, 519842, 1039684, 1299605, 2079368, 2599210, 4158736, 5198420, 10396840, 20793680]

約数ペア:

[(1, 20793680), (2, 10396840), (4, 5198420), (5, 4158736), (8, 2599210), (10, 2079368), (16, 1299605), (20, 1039684), (40, 519842), (61, 340880), (80, 259921), (122, 170440), (244, 85220), (305, 68176), (488, 42610), (610, 34088), (976, 21305), (1220, 17044), (2440, 8522), (4261, 4880)]