21436360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:179

約数の個数: 96

約数和(自身を含む): 54774720

約数和(自身を除く): 33338360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 103, 110, 121, 172, 206, 215, 220, 242, 344, 412, 430, 440, 473, 484, 515, 605, 824, 860, 946, 968, 1030, 1133, 1210, 1720, 1892, 2060, 2266, 2365, 2420, 3784, 4120, 4429, 4532, 4730, 4840, 5203, 5665, 8858, 9064, 9460, 10406, 11330, 12463, 17716, 18920, 20812, 22145, 22660, 24926, 26015, 35432, 41624, 44290, 45320, 48719, 49852, 52030, 62315, 88580, 97438, 99704, 104060, 124630, 177160, 194876, 208120, 243595, 249260, 389752, 487190, 498520, 535909, 974380, 1071818, 1948760, 2143636, 2679545, 4287272, 5359090, 10718180, 21436360]

約数ペア:

[(1, 21436360), (2, 10718180), (4, 5359090), (5, 4287272), (8, 2679545), (10, 2143636), (11, 1948760), (20, 1071818), (22, 974380), (40, 535909), (43, 498520), (44, 487190), (55, 389752), (86, 249260), (88, 243595), (103, 208120), (110, 194876), (121, 177160), (172, 124630), (206, 104060), (215, 99704), (220, 97438), (242, 88580), (344, 62315), (412, 52030), (430, 49852), (440, 48719), (473, 45320), (484, 44290), (515, 41624), (605, 35432), (824, 26015), (860, 24926), (946, 22660), (968, 22145), (1030, 20812), (1133, 18920), (1210, 17716), (1720, 12463), (1892, 11330), (2060, 10406), (2266, 9460), (2365, 9064), (2420, 8858), (3784, 5665), (4120, 5203), (4429, 4840), (4532, 4730)]