18878161720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1865431}}^1$

素因数の和:1865476

約数の個数: 64

約数和(自身を含む): 48351997440

約数和(自身を除く): 29473835720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 220, 230, 253, 440, 460, 506, 920, 1012, 1265, 2024, 2530, 5060, 10120, 1865431, 3730862, 7461724, 9327155, 14923448, 18654310, 20519741, 37308620, 41039482, 42904913, 74617240, 82078964, 85809826, 102598705, 164157928, 171619652, 205197410, 214524565, 343239304, 410394820, 429049130, 471954043, 820789640, 858098260, 943908086, 1716196520, 1887816172, 2359770215, 3775632344, 4719540430, 9439080860, 18878161720]

約数ペア:

[(1, 18878161720), (2, 9439080860), (4, 4719540430), (5, 3775632344), (8, 2359770215), (10, 1887816172), (11, 1716196520), (20, 943908086), (22, 858098260), (23, 820789640), (40, 471954043), (44, 429049130), (46, 410394820), (55, 343239304), (88, 214524565), (92, 205197410), (110, 171619652), (115, 164157928), (184, 102598705), (220, 85809826), (230, 82078964), (253, 74617240), (440, 42904913), (460, 41039482), (506, 37308620), (920, 20519741), (1012, 18654310), (1265, 14923448), (2024, 9327155), (2530, 7461724), (5060, 3730862), (10120, 1865431)]