21426680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{233}}^1$

素因数の和:285

約数の個数: 96

約数和(自身を含む): 56019600

約数和(自身を除く): 34592920

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 121, 152, 190, 209, 220, 233, 242, 380, 418, 440, 466, 484, 605, 760, 836, 932, 968, 1045, 1165, 1210, 1672, 1864, 2090, 2299, 2330, 2420, 2563, 4180, 4427, 4598, 4660, 4840, 5126, 8360, 8854, 9196, 9320, 10252, 11495, 12815, 17708, 18392, 20504, 22135, 22990, 25630, 28193, 35416, 44270, 45980, 48697, 51260, 56386, 88540, 91960, 97394, 102520, 112772, 140965, 177080, 194788, 225544, 243485, 281930, 389576, 486970, 535667, 563860, 973940, 1071334, 1127720, 1947880, 2142668, 2678335, 4285336, 5356670, 10713340, 21426680]

約数ペア:

[(1, 21426680), (2, 10713340), (4, 5356670), (5, 4285336), (8, 2678335), (10, 2142668), (11, 1947880), (19, 1127720), (20, 1071334), (22, 973940), (38, 563860), (40, 535667), (44, 486970), (55, 389576), (76, 281930), (88, 243485), (95, 225544), (110, 194788), (121, 177080), (152, 140965), (190, 112772), (209, 102520), (220, 97394), (233, 91960), (242, 88540), (380, 56386), (418, 51260), (440, 48697), (466, 45980), (484, 44270), (605, 35416), (760, 28193), (836, 25630), (932, 22990), (968, 22135), (1045, 20504), (1165, 18392), (1210, 17708), (1672, 12815), (1864, 11495), (2090, 10252), (2299, 9320), (2330, 9196), (2420, 8854), (2563, 8360), (4180, 5126), (4427, 4840), (4598, 4660)]