21238156775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{419}}^1$

素因数の和:657

約数の個数: 96

約数和(自身を含む): 30935520000

約数和(自身を除く): 9697363225

約数列:

[1, 5, 11, 19, 25, 55, 89, 95, 109, 209, 275, 419, 445, 475, 545, 979, 1045, 1199, 1691, 2071, 2095, 2225, 2725, 4609, 4895, 5225, 5995, 7961, 8455, 9701, 10355, 10475, 18601, 22781, 23045, 24475, 29975, 37291, 39805, 42275, 45671, 48505, 51775, 87571, 93005, 106711, 113905, 115225, 184319, 186455, 199025, 228355, 242525, 410201, 437855, 465025, 502381, 533555, 569525, 708529, 867749, 921595, 932275, 1141775, 2027509, 2051005, 2189275, 2511905, 2667775, 3542645, 4064719, 4338745, 4607975, 7793819, 9545239, 10137545, 10255025, 12559525, 17713225, 20323595, 21693725, 38969095, 44711909, 47726195, 50687725, 77229661, 101617975, 194845475, 223559545, 238630975, 386148305, 849526271, 1117797725, 1930741525, 4247631355, 21238156775]

約数ペア:

[(1, 21238156775), (5, 4247631355), (11, 1930741525), (19, 1117797725), (25, 849526271), (55, 386148305), (89, 238630975), (95, 223559545), (109, 194845475), (209, 101617975), (275, 77229661), (419, 50687725), (445, 47726195), (475, 44711909), (545, 38969095), (979, 21693725), (1045, 20323595), (1199, 17713225), (1691, 12559525), (2071, 10255025), (2095, 10137545), (2225, 9545239), (2725, 7793819), (4609, 4607975), (4895, 4338745), (5225, 4064719), (5995, 3542645), (7961, 2667775), (8455, 2511905), (9701, 2189275), (10355, 2051005), (10475, 2027509), (18601, 1141775), (22781, 932275), (23045, 921595), (24475, 867749), (29975, 708529), (37291, 569525), (39805, 533555), (42275, 502381), (45671, 465025), (48505, 437855), (51775, 410201), (87571, 242525), (93005, 228355), (106711, 199025), (113905, 186455), (115225, 184319)]