2019980380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{919}}^1$

素因数の和:1139

約数の個数: 96

約数和(自身を含む): 4725826560

約数和(自身を除く): 2705846180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 103, 110, 194, 206, 220, 388, 412, 485, 515, 919, 970, 1030, 1067, 1133, 1838, 1940, 2060, 2134, 2266, 3676, 4268, 4532, 4595, 5335, 5665, 9190, 9991, 10109, 10670, 11330, 18380, 19982, 20218, 21340, 22660, 39964, 40436, 49955, 50545, 89143, 94657, 99910, 101090, 109901, 178286, 189314, 199820, 202180, 219802, 356572, 378628, 439604, 445715, 473285, 549505, 891430, 946570, 980573, 1041227, 1099010, 1782860, 1893140, 1961146, 2082454, 2198020, 3922292, 4164908, 4902865, 5206135, 9181729, 9805730, 10412270, 18363458, 19611460, 20824540, 36726916, 45908645, 91817290, 100999019, 183634580, 201998038, 403996076, 504995095, 1009990190, 2019980380]

約数ペア:

[(1, 2019980380), (2, 1009990190), (4, 504995095), (5, 403996076), (10, 201998038), (11, 183634580), (20, 100999019), (22, 91817290), (44, 45908645), (55, 36726916), (97, 20824540), (103, 19611460), (110, 18363458), (194, 10412270), (206, 9805730), (220, 9181729), (388, 5206135), (412, 4902865), (485, 4164908), (515, 3922292), (919, 2198020), (970, 2082454), (1030, 1961146), (1067, 1893140), (1133, 1782860), (1838, 1099010), (1940, 1041227), (2060, 980573), (2134, 946570), (2266, 891430), (3676, 549505), (4268, 473285), (4532, 445715), (4595, 439604), (5335, 378628), (5665, 356572), (9190, 219802), (9991, 202180), (10109, 199820), (10670, 189314), (11330, 178286), (18380, 109901), (19982, 101090), (20218, 99910), (21340, 94657), (22660, 89143), (39964, 50545), (40436, 49955)]