1278991640

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{617}}^1\times {\mathrm{1787}}^1$

素因数の和:2444

約数の個数: 64

約数和(自身を含む): 2983456800

約数和(自身を除く): 1704465160

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 617, 1160, 1234, 1787, 2468, 3085, 3574, 4936, 6170, 7148, 8935, 12340, 14296, 17870, 17893, 24680, 35740, 35786, 51823, 71480, 71572, 89465, 103646, 143144, 178930, 207292, 259115, 357860, 414584, 518230, 715720, 1036460, 1102579, 2072920, 2205158, 4410316, 5512895, 8820632, 11025790, 22051580, 31974791, 44103160, 63949582, 127899164, 159873955, 255798328, 319747910, 639495820, 1278991640]

約数ペア:

[(1, 1278991640), (2, 639495820), (4, 319747910), (5, 255798328), (8, 159873955), (10, 127899164), (20, 63949582), (29, 44103160), (40, 31974791), (58, 22051580), (116, 11025790), (145, 8820632), (232, 5512895), (290, 4410316), (580, 2205158), (617, 2072920), (1160, 1102579), (1234, 1036460), (1787, 715720), (2468, 518230), (3085, 414584), (3574, 357860), (4936, 259115), (6170, 207292), (7148, 178930), (8935, 143144), (12340, 103646), (14296, 89465), (17870, 71572), (17893, 71480), (24680, 51823), (35740, 35786)]