257206880

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{619}}^1$

素因数の和:701

約数の個数: 144

約数和(自身を含む): 721360080

約数和(自身を除く): 464153200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 53, 56, 70, 80, 98, 106, 112, 140, 160, 196, 212, 224, 245, 265, 280, 371, 392, 424, 490, 530, 560, 619, 742, 784, 848, 980, 1060, 1120, 1238, 1484, 1568, 1696, 1855, 1960, 2120, 2476, 2597, 2968, 3095, 3710, 3920, 4240, 4333, 4952, 5194, 5936, 6190, 7420, 7840, 8480, 8666, 9904, 10388, 11872, 12380, 12985, 14840, 17332, 19808, 20776, 21665, 24760, 25970, 29680, 30331, 32807, 34664, 41552, 43330, 49520, 51940, 59360, 60662, 65614, 69328, 83104, 86660, 99040, 103880, 121324, 131228, 138656, 151655, 164035, 173320, 207760, 229649, 242648, 262456, 303310, 328070, 346640, 415520, 459298, 485296, 524912, 606620, 656140, 693280, 918596, 970592, 1049824, 1148245, 1213240, 1312280, 1607543, 1837192, 2296490, 2426480, 2624560, 3215086, 3674384, 4592980, 4852960, 5249120, 6430172, 7348768, 8037715, 9185960, 12860344, 16075430, 18371920, 25720688, 32150860, 36743840, 51441376, 64301720, 128603440, 257206880]

約数ペア:

[(1, 257206880), (2, 128603440), (4, 64301720), (5, 51441376), (7, 36743840), (8, 32150860), (10, 25720688), (14, 18371920), (16, 16075430), (20, 12860344), (28, 9185960), (32, 8037715), (35, 7348768), (40, 6430172), (49, 5249120), (53, 4852960), (56, 4592980), (70, 3674384), (80, 3215086), (98, 2624560), (106, 2426480), (112, 2296490), (140, 1837192), (160, 1607543), (196, 1312280), (212, 1213240), (224, 1148245), (245, 1049824), (265, 970592), (280, 918596), (371, 693280), (392, 656140), (424, 606620), (490, 524912), (530, 485296), (560, 459298), (619, 415520), (742, 346640), (784, 328070), (848, 303310), (980, 262456), (1060, 242648), (1120, 229649), (1238, 207760), (1484, 173320), (1568, 164035), (1696, 151655), (1855, 138656), (1960, 131228), (2120, 121324), (2476, 103880), (2597, 99040), (2968, 86660), (3095, 83104), (3710, 69328), (3920, 65614), (4240, 60662), (4333, 59360), (4952, 51940), (5194, 49520), (5936, 43330), (6190, 41552), (7420, 34664), (7840, 32807), (8480, 30331), (8666, 29680), (9904, 25970), (10388, 24760), (11872, 21665), (12380, 20776), (12985, 19808), (14840, 17332)]