21297100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1019}}^1$

素因数の和:1063

約数の個数: 72

約数和(自身を含む): 53121600

約数和(自身を除く): 31824500

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 190, 209, 220, 275, 380, 418, 475, 550, 836, 950, 1019, 1045, 1100, 1900, 2038, 2090, 4076, 4180, 5095, 5225, 10190, 10450, 11209, 19361, 20380, 20900, 22418, 25475, 38722, 44836, 50950, 56045, 77444, 96805, 101900, 112090, 193610, 212971, 224180, 280225, 387220, 425942, 484025, 560450, 851884, 968050, 1064855, 1120900, 1936100, 2129710, 4259420, 5324275, 10648550, 21297100]

約数ペア:

[(1, 21297100), (2, 10648550), (4, 5324275), (5, 4259420), (10, 2129710), (11, 1936100), (19, 1120900), (20, 1064855), (22, 968050), (25, 851884), (38, 560450), (44, 484025), (50, 425942), (55, 387220), (76, 280225), (95, 224180), (100, 212971), (110, 193610), (190, 112090), (209, 101900), (220, 96805), (275, 77444), (380, 56045), (418, 50950), (475, 44836), (550, 38722), (836, 25475), (950, 22418), (1019, 20900), (1045, 20380), (1100, 19361), (1900, 11209), (2038, 10450), (2090, 10190), (4076, 5225), (4180, 5095)]