28222720

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1297}}^1$

素因数の和:1335

約数の個数: 72

約数和(自身を含む): 71634024

約数和(自身を除く): 43411304

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 1088, 1280, 1297, 1360, 2176, 2594, 2720, 4352, 5188, 5440, 6485, 10376, 10880, 12970, 20752, 21760, 22049, 25940, 41504, 44098, 51880, 83008, 88196, 103760, 110245, 166016, 176392, 207520, 220490, 332032, 352784, 415040, 440980, 705568, 830080, 881960, 1411136, 1660160, 1763920, 2822272, 3527840, 5644544, 7055680, 14111360, 28222720]

約数ペア:

[(1, 28222720), (2, 14111360), (4, 7055680), (5, 5644544), (8, 3527840), (10, 2822272), (16, 1763920), (17, 1660160), (20, 1411136), (32, 881960), (34, 830080), (40, 705568), (64, 440980), (68, 415040), (80, 352784), (85, 332032), (128, 220490), (136, 207520), (160, 176392), (170, 166016), (256, 110245), (272, 103760), (320, 88196), (340, 83008), (544, 51880), (640, 44098), (680, 41504), (1088, 25940), (1280, 22049), (1297, 21760), (1360, 20752), (2176, 12970), (2594, 10880), (2720, 10376), (4352, 6485), (5188, 5440)]