400964720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{22679}}^1$

素因数の和:22722

約数の個数: 80

約数和(自身を含む): 1063056960

約数和(自身を除く): 662092240

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 170, 208, 221, 260, 272, 340, 442, 520, 680, 884, 1040, 1105, 1360, 1768, 2210, 3536, 4420, 8840, 17680, 22679, 45358, 90716, 113395, 181432, 226790, 294827, 362864, 385543, 453580, 589654, 771086, 907160, 1179308, 1474135, 1542172, 1814320, 1927715, 2358616, 2948270, 3084344, 3855430, 4717232, 5012059, 5896540, 6168688, 7710860, 10024118, 11793080, 15421720, 20048236, 23586160, 25060295, 30843440, 40096472, 50120590, 80192944, 100241180, 200482360, 400964720]

約数ペア:

[(1, 400964720), (2, 200482360), (4, 100241180), (5, 80192944), (8, 50120590), (10, 40096472), (13, 30843440), (16, 25060295), (17, 23586160), (20, 20048236), (26, 15421720), (34, 11793080), (40, 10024118), (52, 7710860), (65, 6168688), (68, 5896540), (80, 5012059), (85, 4717232), (104, 3855430), (130, 3084344), (136, 2948270), (170, 2358616), (208, 1927715), (221, 1814320), (260, 1542172), (272, 1474135), (340, 1179308), (442, 907160), (520, 771086), (680, 589654), (884, 453580), (1040, 385543), (1105, 362864), (1360, 294827), (1768, 226790), (2210, 181432), (3536, 113395), (4420, 90716), (8840, 45358), (17680, 22679)]