21805162280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{499}}^1\times {\mathrm{5227}}^1$

素因数の和:5767

約数の個数: 128

約数和(自身を含む): 56462400000

約数和(自身を除く): 34657237720

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 499, 760, 836, 998, 1045, 1672, 1996, 2090, 2495, 3992, 4180, 4990, 5227, 5489, 8360, 9481, 9980, 10454, 10978, 18962, 19960, 20908, 21956, 26135, 27445, 37924, 41816, 43912, 47405, 52270, 54890, 57497, 75848, 94810, 99313, 104291, 104540, 109780, 114994, 189620, 198626, 208582, 209080, 219560, 229988, 287485, 379240, 397252, 417164, 459976, 496565, 521455, 574970, 794504, 834328, 993130, 1042910, 1092443, 1149940, 1986260, 2085820, 2184886, 2299880, 2608273, 3972520, 4171640, 4369772, 5216546, 5462215, 8739544, 10433092, 10924430, 13041365, 20866184, 21848860, 26082730, 28691003, 43697720, 49557187, 52165460, 57382006, 99114374, 104330920, 114764012, 143455015, 198228748, 229528024, 247785935, 286910030, 396457496, 495571870, 545129057, 573820060, 991143740, 1090258114, 1147640120, 1982287480, 2180516228, 2725645285, 4361032456, 5451290570, 10902581140, 21805162280]

約数ペア:

[(1, 21805162280), (2, 10902581140), (4, 5451290570), (5, 4361032456), (8, 2725645285), (10, 2180516228), (11, 1982287480), (19, 1147640120), (20, 1090258114), (22, 991143740), (38, 573820060), (40, 545129057), (44, 495571870), (55, 396457496), (76, 286910030), (88, 247785935), (95, 229528024), (110, 198228748), (152, 143455015), (190, 114764012), (209, 104330920), (220, 99114374), (380, 57382006), (418, 52165460), (440, 49557187), (499, 43697720), (760, 28691003), (836, 26082730), (998, 21848860), (1045, 20866184), (1672, 13041365), (1996, 10924430), (2090, 10433092), (2495, 8739544), (3992, 5462215), (4180, 5216546), (4990, 4369772), (5227, 4171640), (5489, 3972520), (8360, 2608273), (9481, 2299880), (9980, 2184886), (10454, 2085820), (10978, 1986260), (18962, 1149940), (19960, 1092443), (20908, 1042910), (21956, 993130), (26135, 834328), (27445, 794504), (37924, 574970), (41816, 521455), (43912, 496565), (47405, 459976), (52270, 417164), (54890, 397252), (57497, 379240), (75848, 287485), (94810, 229988), (99313, 219560), (104291, 209080), (104540, 208582), (109780, 198626), (114994, 189620)]