12717440

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{641}}^1$

素因数の和:691

約数の個数: 64

約数和(自身を含む): 31432320

約数和(自身を除く): 18714880

約数列:

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

約数ペア:

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