21663040

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{509}}^1$

素因数の和:552

約数の個数: 112

約数和(自身を含む): 62179200

約数和(自身を除く): 40516160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 133, 140, 152, 160, 190, 224, 266, 280, 304, 320, 380, 448, 509, 532, 560, 608, 665, 760, 1018, 1064, 1120, 1216, 1330, 1520, 2036, 2128, 2240, 2545, 2660, 3040, 3563, 4072, 4256, 5090, 5320, 6080, 7126, 8144, 8512, 9671, 10180, 10640, 14252, 16288, 17815, 19342, 20360, 21280, 28504, 32576, 35630, 38684, 40720, 42560, 48355, 57008, 67697, 71260, 77368, 81440, 96710, 114016, 135394, 142520, 154736, 162880, 193420, 228032, 270788, 285040, 309472, 338485, 386840, 541576, 570080, 618944, 676970, 773680, 1083152, 1140160, 1353940, 1547360, 2166304, 2707880, 3094720, 4332608, 5415760, 10831520, 21663040]

約数ペア:

[(1, 21663040), (2, 10831520), (4, 5415760), (5, 4332608), (7, 3094720), (8, 2707880), (10, 2166304), (14, 1547360), (16, 1353940), (19, 1140160), (20, 1083152), (28, 773680), (32, 676970), (35, 618944), (38, 570080), (40, 541576), (56, 386840), (64, 338485), (70, 309472), (76, 285040), (80, 270788), (95, 228032), (112, 193420), (133, 162880), (140, 154736), (152, 142520), (160, 135394), (190, 114016), (224, 96710), (266, 81440), (280, 77368), (304, 71260), (320, 67697), (380, 57008), (448, 48355), (509, 42560), (532, 40720), (560, 38684), (608, 35630), (665, 32576), (760, 28504), (1018, 21280), (1064, 20360), (1120, 19342), (1216, 17815), (1330, 16288), (1520, 14252), (2036, 10640), (2128, 10180), (2240, 9671), (2545, 8512), (2660, 8144), (3040, 7126), (3563, 6080), (4072, 5320), (4256, 5090)]