205745120

素因数分解:

$2^5\times 5^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:222

約数の個数: 192

約数和(自身を含む): 595123200

約数和(自身を除く): 389378080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 49, 56, 70, 80, 92, 98, 112, 115, 140, 160, 161, 163, 184, 196, 224, 230, 245, 280, 322, 326, 343, 368, 392, 460, 490, 560, 644, 652, 686, 736, 784, 805, 815, 920, 980, 1120, 1127, 1141, 1288, 1304, 1372, 1568, 1610, 1630, 1715, 1840, 1960, 2254, 2282, 2576, 2608, 2744, 3220, 3260, 3430, 3680, 3749, 3920, 4508, 4564, 5152, 5216, 5488, 5635, 5705, 6440, 6520, 6860, 7498, 7840, 7889, 7987, 9016, 9128, 10976, 11270, 11410, 12880, 13040, 13720, 14996, 15778, 15974, 18032, 18256, 18745, 22540, 22820, 25760, 26080, 26243, 27440, 29992, 31556, 31948, 36064, 36512, 37490, 39445, 39935, 45080, 45640, 52486, 54880, 55909, 59984, 63112, 63896, 74980, 78890, 79870, 90160, 91280, 104972, 111818, 119968, 126224, 127792, 131215, 149960, 157780, 159740, 180320, 182560, 183701, 209944, 223636, 252448, 255584, 262430, 279545, 299920, 315560, 319480, 367402, 419888, 447272, 524860, 559090, 599840, 631120, 638960, 734804, 839776, 894544, 918505, 1049720, 1118180, 1262240, 1277920, 1285907, 1469608, 1789088, 1837010, 2099440, 2236360, 2571814, 2939216, 3674020, 4198880, 4472720, 5143628, 5878432, 6429535, 7348040, 8945440, 10287256, 12859070, 14696080, 20574512, 25718140, 29392160, 41149024, 51436280, 102872560, 205745120]

約数ペア:

[(1, 205745120), (2, 102872560), (4, 51436280), (5, 41149024), (7, 29392160), (8, 25718140), (10, 20574512), (14, 14696080), (16, 12859070), (20, 10287256), (23, 8945440), (28, 7348040), (32, 6429535), (35, 5878432), (40, 5143628), (46, 4472720), (49, 4198880), (56, 3674020), (70, 2939216), (80, 2571814), (92, 2236360), (98, 2099440), (112, 1837010), (115, 1789088), (140, 1469608), (160, 1285907), (161, 1277920), (163, 1262240), (184, 1118180), (196, 1049720), (224, 918505), (230, 894544), (245, 839776), (280, 734804), (322, 638960), (326, 631120), (343, 599840), (368, 559090), (392, 524860), (460, 447272), (490, 419888), (560, 367402), (644, 319480), (652, 315560), (686, 299920), (736, 279545), (784, 262430), (805, 255584), (815, 252448), (920, 223636), (980, 209944), (1120, 183701), (1127, 182560), (1141, 180320), (1288, 159740), (1304, 157780), (1372, 149960), (1568, 131215), (1610, 127792), (1630, 126224), (1715, 119968), (1840, 111818), (1960, 104972), (2254, 91280), (2282, 90160), (2576, 79870), (2608, 78890), (2744, 74980), (3220, 63896), (3260, 63112), (3430, 59984), (3680, 55909), (3749, 54880), (3920, 52486), (4508, 45640), (4564, 45080), (5152, 39935), (5216, 39445), (5488, 37490), (5635, 36512), (5705, 36064), (6440, 31948), (6520, 31556), (6860, 29992), (7498, 27440), (7840, 26243), (7889, 26080), (7987, 25760), (9016, 22820), (9128, 22540), (10976, 18745), (11270, 18256), (11410, 18032), (12880, 15974), (13040, 15778), (13720, 14996)]