20020452920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{421}}^1\times {\mathrm{839}}^1$

素因数の和:1393

約数の個数: 128

約数和(自身を含む): 49130928000

約数和(自身を除く): 29110475080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 109, 130, 218, 260, 421, 436, 520, 545, 839, 842, 872, 1090, 1417, 1678, 1684, 2105, 2180, 2834, 3356, 3368, 4195, 4210, 4360, 5473, 5668, 6712, 7085, 8390, 8420, 10907, 10946, 11336, 14170, 16780, 16840, 21814, 21892, 27365, 28340, 33560, 43628, 43784, 45889, 54535, 54730, 56680, 87256, 91451, 91778, 109070, 109460, 182902, 183556, 218140, 218920, 229445, 353219, 365804, 367112, 436280, 457255, 458890, 596557, 706438, 731608, 914510, 917780, 1188863, 1193114, 1412876, 1766095, 1829020, 1835560, 2377726, 2386228, 2825752, 2982785, 3532190, 3658040, 4591847, 4755452, 4772456, 5944315, 5965570, 7064380, 9183694, 9510904, 11888630, 11931140, 14128760, 18367388, 22959235, 23777260, 23862280, 36734776, 38500871, 45918470, 47554520, 77001742, 91836940, 154003484, 183673880, 192504355, 308006968, 385008710, 500511323, 770017420, 1001022646, 1540034840, 2002045292, 2502556615, 4004090584, 5005113230, 10010226460, 20020452920]

約数ペア:

[(1, 20020452920), (2, 10010226460), (4, 5005113230), (5, 4004090584), (8, 2502556615), (10, 2002045292), (13, 1540034840), (20, 1001022646), (26, 770017420), (40, 500511323), (52, 385008710), (65, 308006968), (104, 192504355), (109, 183673880), (130, 154003484), (218, 91836940), (260, 77001742), (421, 47554520), (436, 45918470), (520, 38500871), (545, 36734776), (839, 23862280), (842, 23777260), (872, 22959235), (1090, 18367388), (1417, 14128760), (1678, 11931140), (1684, 11888630), (2105, 9510904), (2180, 9183694), (2834, 7064380), (3356, 5965570), (3368, 5944315), (4195, 4772456), (4210, 4755452), (4360, 4591847), (5473, 3658040), (5668, 3532190), (6712, 2982785), (7085, 2825752), (8390, 2386228), (8420, 2377726), (10907, 1835560), (10946, 1829020), (11336, 1766095), (14170, 1412876), (16780, 1193114), (16840, 1188863), (21814, 917780), (21892, 914510), (27365, 731608), (28340, 706438), (33560, 596557), (43628, 458890), (43784, 457255), (45889, 436280), (54535, 367112), (54730, 365804), (56680, 353219), (87256, 229445), (91451, 218920), (91778, 218140), (109070, 183556), (109460, 182902)]