21396100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{367}}^1$

素因数の和:445

約数の個数: 72

約数和(自身を含む): 51746688

約数和(自身を除く): 30350588

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 53, 55, 100, 106, 110, 212, 220, 265, 275, 367, 530, 550, 583, 734, 1060, 1100, 1166, 1325, 1468, 1835, 2332, 2650, 2915, 3670, 4037, 5300, 5830, 7340, 8074, 9175, 11660, 14575, 16148, 18350, 19451, 20185, 29150, 36700, 38902, 40370, 58300, 77804, 80740, 97255, 100925, 194510, 201850, 213961, 389020, 403700, 427922, 486275, 855844, 972550, 1069805, 1945100, 2139610, 4279220, 5349025, 10698050, 21396100]

約数ペア:

[(1, 21396100), (2, 10698050), (4, 5349025), (5, 4279220), (10, 2139610), (11, 1945100), (20, 1069805), (22, 972550), (25, 855844), (44, 486275), (50, 427922), (53, 403700), (55, 389020), (100, 213961), (106, 201850), (110, 194510), (212, 100925), (220, 97255), (265, 80740), (275, 77804), (367, 58300), (530, 40370), (550, 38902), (583, 36700), (734, 29150), (1060, 20185), (1100, 19451), (1166, 18350), (1325, 16148), (1468, 14575), (1835, 11660), (2332, 9175), (2650, 8074), (2915, 7340), (3670, 5830), (4037, 5300)]