248402560

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{89}}^2$

素因数の和:211

約数の個数: 144

約数和(自身を含む): 698639310

約数和(自身を除く): 450236750

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 89, 98, 112, 128, 140, 160, 178, 196, 224, 245, 280, 320, 356, 392, 445, 448, 490, 560, 623, 640, 712, 784, 890, 896, 980, 1120, 1246, 1424, 1568, 1780, 1960, 2240, 2492, 2848, 3115, 3136, 3560, 3920, 4361, 4480, 4984, 5696, 6230, 6272, 7120, 7840, 7921, 8722, 9968, 11392, 12460, 14240, 15680, 15842, 17444, 19936, 21805, 24920, 28480, 31360, 31684, 34888, 39605, 39872, 43610, 49840, 55447, 56960, 63368, 69776, 79210, 79744, 87220, 99680, 110894, 126736, 139552, 158420, 174440, 199360, 221788, 253472, 277235, 279104, 316840, 348880, 388129, 398720, 443576, 506944, 554470, 558208, 633680, 697760, 776258, 887152, 1013888, 1108940, 1267360, 1395520, 1552516, 1774304, 1940645, 2217880, 2534720, 2791040, 3105032, 3548608, 3881290, 4435760, 5069440, 6210064, 7097216, 7762580, 8871520, 12420128, 15525160, 17743040, 24840256, 31050320, 35486080, 49680512, 62100640, 124201280, 248402560]

約数ペア:

[(1, 248402560), (2, 124201280), (4, 62100640), (5, 49680512), (7, 35486080), (8, 31050320), (10, 24840256), (14, 17743040), (16, 15525160), (20, 12420128), (28, 8871520), (32, 7762580), (35, 7097216), (40, 6210064), (49, 5069440), (56, 4435760), (64, 3881290), (70, 3548608), (80, 3105032), (89, 2791040), (98, 2534720), (112, 2217880), (128, 1940645), (140, 1774304), (160, 1552516), (178, 1395520), (196, 1267360), (224, 1108940), (245, 1013888), (280, 887152), (320, 776258), (356, 697760), (392, 633680), (445, 558208), (448, 554470), (490, 506944), (560, 443576), (623, 398720), (640, 388129), (712, 348880), (784, 316840), (890, 279104), (896, 277235), (980, 253472), (1120, 221788), (1246, 199360), (1424, 174440), (1568, 158420), (1780, 139552), (1960, 126736), (2240, 110894), (2492, 99680), (2848, 87220), (3115, 79744), (3136, 79210), (3560, 69776), (3920, 63368), (4361, 56960), (4480, 55447), (4984, 49840), (5696, 43610), (6230, 39872), (6272, 39605), (7120, 34888), (7840, 31684), (7921, 31360), (8722, 28480), (9968, 24920), (11392, 21805), (12460, 19936), (14240, 17444), (15680, 15842)]