280805720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{13171}}^1$

素因数の和:13236

約数の個数: 64

約数和(自身を含む): 697062240

約数和(自身を除く): 416256520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 410, 520, 533, 820, 1066, 1640, 2132, 2665, 4264, 5330, 10660, 13171, 21320, 26342, 52684, 65855, 105368, 131710, 171223, 263420, 342446, 526840, 540011, 684892, 856115, 1080022, 1369784, 1712230, 2160044, 2700055, 3424460, 4320088, 5400110, 6848920, 7020143, 10800220, 14040286, 21600440, 28080572, 35100715, 56161144, 70201430, 140402860, 280805720]

約数ペア:

[(1, 280805720), (2, 140402860), (4, 70201430), (5, 56161144), (8, 35100715), (10, 28080572), (13, 21600440), (20, 14040286), (26, 10800220), (40, 7020143), (41, 6848920), (52, 5400110), (65, 4320088), (82, 3424460), (104, 2700055), (130, 2160044), (164, 1712230), (205, 1369784), (260, 1080022), (328, 856115), (410, 684892), (520, 540011), (533, 526840), (820, 342446), (1066, 263420), (1640, 171223), (2132, 131710), (2665, 105368), (4264, 65855), (5330, 52684), (10660, 26342), (13171, 21320)]