12888080

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:232

約数の個数: 80

約数和(自身を含む): 32289600

約数和(自身を除く): 19401520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 61, 76, 80, 95, 122, 139, 152, 190, 244, 278, 304, 305, 380, 488, 556, 610, 695, 760, 976, 1112, 1159, 1220, 1390, 1520, 2224, 2318, 2440, 2641, 2780, 4636, 4880, 5282, 5560, 5795, 8479, 9272, 10564, 11120, 11590, 13205, 16958, 18544, 21128, 23180, 26410, 33916, 42256, 42395, 46360, 52820, 67832, 84790, 92720, 105640, 135664, 161101, 169580, 211280, 322202, 339160, 644404, 678320, 805505, 1288808, 1611010, 2577616, 3222020, 6444040, 12888080]

約数ペア:

[(1, 12888080), (2, 6444040), (4, 3222020), (5, 2577616), (8, 1611010), (10, 1288808), (16, 805505), (19, 678320), (20, 644404), (38, 339160), (40, 322202), (61, 211280), (76, 169580), (80, 161101), (95, 135664), (122, 105640), (139, 92720), (152, 84790), (190, 67832), (244, 52820), (278, 46360), (304, 42395), (305, 42256), (380, 33916), (488, 26410), (556, 23180), (610, 21128), (695, 18544), (760, 16958), (976, 13205), (1112, 11590), (1159, 11120), (1220, 10564), (1390, 9272), (1520, 8479), (2224, 5795), (2318, 5560), (2440, 5282), (2641, 4880), (2780, 4636)]