21663990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:179

約数の個数: 128

約数和(自身を含む): 62899200

約数和(自身を除く): 41235210

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 27, 30, 38, 41, 45, 54, 57, 82, 90, 95, 103, 114, 123, 135, 171, 190, 205, 206, 246, 270, 285, 309, 342, 369, 410, 513, 515, 570, 615, 618, 738, 779, 855, 927, 1026, 1030, 1107, 1230, 1545, 1558, 1710, 1845, 1854, 1957, 2214, 2337, 2565, 2781, 3090, 3690, 3895, 3914, 4223, 4635, 4674, 5130, 5535, 5562, 5871, 7011, 7790, 8446, 9270, 9785, 11070, 11685, 11742, 12669, 13905, 14022, 17613, 19570, 21033, 21115, 23370, 25338, 27810, 29355, 35055, 35226, 38007, 42066, 42230, 52839, 58710, 63345, 70110, 76014, 80237, 88065, 105165, 105678, 114021, 126690, 160474, 176130, 190035, 210330, 228042, 240711, 264195, 380070, 401185, 481422, 528390, 570105, 722133, 802370, 1140210, 1203555, 1444266, 2166399, 2407110, 3610665, 4332798, 7221330, 10831995, 21663990]

約数ペア:

[(1, 21663990), (2, 10831995), (3, 7221330), (5, 4332798), (6, 3610665), (9, 2407110), (10, 2166399), (15, 1444266), (18, 1203555), (19, 1140210), (27, 802370), (30, 722133), (38, 570105), (41, 528390), (45, 481422), (54, 401185), (57, 380070), (82, 264195), (90, 240711), (95, 228042), (103, 210330), (114, 190035), (123, 176130), (135, 160474), (171, 126690), (190, 114021), (205, 105678), (206, 105165), (246, 88065), (270, 80237), (285, 76014), (309, 70110), (342, 63345), (369, 58710), (410, 52839), (513, 42230), (515, 42066), (570, 38007), (615, 35226), (618, 35055), (738, 29355), (779, 27810), (855, 25338), (927, 23370), (1026, 21115), (1030, 21033), (1107, 19570), (1230, 17613), (1545, 14022), (1558, 13905), (1710, 12669), (1845, 11742), (1854, 11685), (1957, 11070), (2214, 9785), (2337, 9270), (2565, 8446), (2781, 7790), (3090, 7011), (3690, 5871), (3895, 5562), (3914, 5535), (4223, 5130), (4635, 4674)]