12687440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1$

素因数の和:540

約数の個数: 80

約数和(自身を含む): 32944320

約数和(自身を除く): 20256880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 491, 646, 680, 760, 982, 1292, 1360, 1520, 1615, 1964, 2455, 2584, 3230, 3928, 4910, 5168, 6460, 7856, 8347, 9329, 9820, 12920, 16694, 18658, 19640, 25840, 33388, 37316, 39280, 41735, 46645, 66776, 74632, 83470, 93290, 133552, 149264, 158593, 166940, 186580, 317186, 333880, 373160, 634372, 667760, 746320, 792965, 1268744, 1585930, 2537488, 3171860, 6343720, 12687440]

約数ペア:

[(1, 12687440), (2, 6343720), (4, 3171860), (5, 2537488), (8, 1585930), (10, 1268744), (16, 792965), (17, 746320), (19, 667760), (20, 634372), (34, 373160), (38, 333880), (40, 317186), (68, 186580), (76, 166940), (80, 158593), (85, 149264), (95, 133552), (136, 93290), (152, 83470), (170, 74632), (190, 66776), (272, 46645), (304, 41735), (323, 39280), (340, 37316), (380, 33388), (491, 25840), (646, 19640), (680, 18658), (760, 16694), (982, 12920), (1292, 9820), (1360, 9329), (1520, 8347), (1615, 7856), (1964, 6460), (2455, 5168), (2584, 4910), (3230, 3928)]