25434880

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{641}}^1$

素因数の和:693

約数の個数: 72

約数和(自身を含む): 62987904

約数和(自身を除く): 37553024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 641, 992, 1240, 1280, 1282, 1984, 2480, 2564, 3205, 3968, 4960, 5128, 6410, 7936, 9920, 10256, 12820, 19840, 19871, 20512, 25640, 39680, 39742, 41024, 51280, 79484, 82048, 99355, 102560, 158968, 164096, 198710, 205120, 317936, 397420, 410240, 635872, 794840, 820480, 1271744, 1589680, 2543488, 3179360, 5086976, 6358720, 12717440, 25434880]

約数ペア:

[(1, 25434880), (2, 12717440), (4, 6358720), (5, 5086976), (8, 3179360), (10, 2543488), (16, 1589680), (20, 1271744), (31, 820480), (32, 794840), (40, 635872), (62, 410240), (64, 397420), (80, 317936), (124, 205120), (128, 198710), (155, 164096), (160, 158968), (248, 102560), (256, 99355), (310, 82048), (320, 79484), (496, 51280), (620, 41024), (640, 39742), (641, 39680), (992, 25640), (1240, 20512), (1280, 19871), (1282, 19840), (1984, 12820), (2480, 10256), (2564, 9920), (3205, 7936), (3968, 6410), (4960, 5128)]