1661138360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1\times {\mathrm{449}}^1$

素因数の和:721

約数の個数: 128

約数和(自身を含む): 4363632000

約数和(自身を除く): 2702493640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 181, 280, 292, 362, 365, 449, 511, 584, 724, 730, 898, 905, 1022, 1267, 1448, 1460, 1796, 1810, 2044, 2245, 2534, 2555, 2920, 3143, 3592, 3620, 4088, 4490, 5068, 5110, 6286, 6335, 7240, 8980, 10136, 10220, 12572, 12670, 13213, 15715, 17960, 20440, 25144, 25340, 26426, 31430, 32777, 50680, 52852, 62860, 65554, 66065, 81269, 92491, 105704, 125720, 131108, 132130, 162538, 163885, 184982, 229439, 262216, 264260, 325076, 327770, 369964, 406345, 458878, 462455, 528520, 568883, 650152, 655540, 739928, 812690, 917756, 924910, 1137766, 1147195, 1311080, 1625380, 1835512, 1849820, 2275532, 2294390, 2844415, 3250760, 3699640, 4551064, 4588780, 5688830, 5932637, 9177560, 11377660, 11865274, 22755320, 23730548, 29663185, 41528459, 47461096, 59326370, 83056918, 118652740, 166113836, 207642295, 237305480, 332227672, 415284590, 830569180, 1661138360]

約数ペア:

[(1, 1661138360), (2, 830569180), (4, 415284590), (5, 332227672), (7, 237305480), (8, 207642295), (10, 166113836), (14, 118652740), (20, 83056918), (28, 59326370), (35, 47461096), (40, 41528459), (56, 29663185), (70, 23730548), (73, 22755320), (140, 11865274), (146, 11377660), (181, 9177560), (280, 5932637), (292, 5688830), (362, 4588780), (365, 4551064), (449, 3699640), (511, 3250760), (584, 2844415), (724, 2294390), (730, 2275532), (898, 1849820), (905, 1835512), (1022, 1625380), (1267, 1311080), (1448, 1147195), (1460, 1137766), (1796, 924910), (1810, 917756), (2044, 812690), (2245, 739928), (2534, 655540), (2555, 650152), (2920, 568883), (3143, 528520), (3592, 462455), (3620, 458878), (4088, 406345), (4490, 369964), (5068, 327770), (5110, 325076), (6286, 264260), (6335, 262216), (7240, 229439), (8980, 184982), (10136, 163885), (10220, 162538), (12572, 132130), (12670, 131108), (13213, 125720), (15715, 105704), (17960, 92491), (20440, 81269), (25144, 66065), (25340, 65554), (26426, 62860), (31430, 52852), (32777, 50680)]