21920340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1$

素因数の和:361

約数の個数: 96

約数和(自身を含む): 66890880

約数和(自身を除く): 44970540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 157, 179, 195, 260, 314, 358, 390, 471, 537, 628, 716, 780, 785, 895, 942, 1074, 1570, 1790, 1884, 2041, 2148, 2327, 2355, 2685, 3140, 3580, 4082, 4654, 4710, 5370, 6123, 6981, 8164, 9308, 9420, 10205, 10740, 11635, 12246, 13962, 20410, 23270, 24492, 27924, 28103, 30615, 34905, 40820, 46540, 56206, 61230, 69810, 84309, 112412, 122460, 139620, 140515, 168618, 281030, 337236, 365339, 421545, 562060, 730678, 843090, 1096017, 1461356, 1686180, 1826695, 2192034, 3653390, 4384068, 5480085, 7306780, 10960170, 21920340]

約数ペア:

[(1, 21920340), (2, 10960170), (3, 7306780), (4, 5480085), (5, 4384068), (6, 3653390), (10, 2192034), (12, 1826695), (13, 1686180), (15, 1461356), (20, 1096017), (26, 843090), (30, 730678), (39, 562060), (52, 421545), (60, 365339), (65, 337236), (78, 281030), (130, 168618), (156, 140515), (157, 139620), (179, 122460), (195, 112412), (260, 84309), (314, 69810), (358, 61230), (390, 56206), (471, 46540), (537, 40820), (628, 34905), (716, 30615), (780, 28103), (785, 27924), (895, 24492), (942, 23270), (1074, 20410), (1570, 13962), (1790, 12246), (1884, 11635), (2041, 10740), (2148, 10205), (2327, 9420), (2355, 9308), (2685, 8164), (3140, 6981), (3580, 6123), (4082, 5370), (4654, 4710)]