255997820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:184

約数の個数: 144

約数和(自身を含む): 630866880

約数和(自身を除く): 374869060

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 37, 46, 52, 65, 74, 89, 92, 115, 130, 148, 169, 178, 185, 230, 260, 299, 338, 356, 370, 445, 460, 481, 598, 676, 740, 845, 851, 890, 962, 1157, 1196, 1495, 1690, 1702, 1780, 1924, 2047, 2314, 2405, 2990, 3293, 3380, 3404, 3887, 4094, 4255, 4628, 4810, 5785, 5980, 6253, 6586, 7774, 8188, 8510, 9620, 10235, 11063, 11570, 12506, 13172, 15041, 15548, 16465, 17020, 19435, 20470, 22126, 23140, 25012, 26611, 30082, 31265, 32930, 38870, 40940, 42809, 44252, 53222, 55315, 60164, 62530, 65860, 75205, 75739, 77740, 85618, 106444, 110630, 125060, 133055, 143819, 150410, 151478, 171236, 214045, 221260, 266110, 287638, 300820, 302956, 345943, 378695, 428090, 532220, 556517, 575276, 691886, 719095, 757390, 856180, 984607, 1113034, 1383772, 1438190, 1514780, 1729715, 1969214, 2226068, 2782585, 2876380, 3459430, 3938428, 4923035, 5565170, 6918860, 9846070, 11130340, 12799891, 19692140, 25599782, 51199564, 63999455, 127998910, 255997820]

約数ペア:

[(1, 255997820), (2, 127998910), (4, 63999455), (5, 51199564), (10, 25599782), (13, 19692140), (20, 12799891), (23, 11130340), (26, 9846070), (37, 6918860), (46, 5565170), (52, 4923035), (65, 3938428), (74, 3459430), (89, 2876380), (92, 2782585), (115, 2226068), (130, 1969214), (148, 1729715), (169, 1514780), (178, 1438190), (185, 1383772), (230, 1113034), (260, 984607), (299, 856180), (338, 757390), (356, 719095), (370, 691886), (445, 575276), (460, 556517), (481, 532220), (598, 428090), (676, 378695), (740, 345943), (845, 302956), (851, 300820), (890, 287638), (962, 266110), (1157, 221260), (1196, 214045), (1495, 171236), (1690, 151478), (1702, 150410), (1780, 143819), (1924, 133055), (2047, 125060), (2314, 110630), (2405, 106444), (2990, 85618), (3293, 77740), (3380, 75739), (3404, 75205), (3887, 65860), (4094, 62530), (4255, 60164), (4628, 55315), (4810, 53222), (5785, 44252), (5980, 42809), (6253, 40940), (6586, 38870), (7774, 32930), (8188, 31265), (8510, 30082), (9620, 26611), (10235, 25012), (11063, 23140), (11570, 22126), (12506, 20470), (13172, 19435), (15041, 17020), (15548, 16465)]