90067720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{36913}}^1$

素因数の和:36985

約数の個数: 32

約数和(自身を含む): 205980120

約数和(自身を除く): 115912400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 36913, 73826, 147652, 184565, 295304, 369130, 738260, 1476520, 2251693, 4503386, 9006772, 11258465, 18013544, 22516930, 45033860, 90067720]

約数ペア:

[(1, 90067720), (2, 45033860), (4, 22516930), (5, 18013544), (8, 11258465), (10, 9006772), (20, 4503386), (40, 2251693), (61, 1476520), (122, 738260), (244, 369130), (305, 295304), (488, 184565), (610, 147652), (1220, 73826), (2440, 36913)]