18609880

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:364

約数の個数: 64

約数和(自身を含む): 44193600

約数和(自身を除く): 25583720

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 61, 116, 122, 145, 232, 244, 263, 290, 305, 488, 526, 580, 610, 1052, 1160, 1220, 1315, 1769, 2104, 2440, 2630, 3538, 5260, 7076, 7627, 8845, 10520, 14152, 15254, 16043, 17690, 30508, 32086, 35380, 38135, 61016, 64172, 70760, 76270, 80215, 128344, 152540, 160430, 305080, 320860, 465247, 641720, 930494, 1860988, 2326235, 3721976, 4652470, 9304940, 18609880]

約数ペア:

[(1, 18609880), (2, 9304940), (4, 4652470), (5, 3721976), (8, 2326235), (10, 1860988), (20, 930494), (29, 641720), (40, 465247), (58, 320860), (61, 305080), (116, 160430), (122, 152540), (145, 128344), (232, 80215), (244, 76270), (263, 70760), (290, 64172), (305, 61016), (488, 38135), (526, 35380), (580, 32086), (610, 30508), (1052, 17690), (1160, 16043), (1220, 15254), (1315, 14152), (1769, 10520), (2104, 8845), (2440, 7627), (2630, 7076), (3538, 5260)]