20385510975

素因数分解:

$3^4\times 5^2\times {\mathrm{73}}^1\times {\mathrm{239}}^1\times {\mathrm{577}}^1$

素因数の和:911

約数の個数: 120

約数和(自身を含む): 38505065280

約数和(自身を除く): 18119554305

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 73, 75, 81, 135, 219, 225, 239, 365, 405, 577, 657, 675, 717, 1095, 1195, 1731, 1825, 1971, 2025, 2151, 2885, 3285, 3585, 5193, 5475, 5913, 5975, 6453, 8655, 9855, 10755, 14425, 15579, 16425, 17447, 17925, 19359, 25965, 29565, 32265, 42121, 43275, 46737, 49275, 52341, 53775, 77895, 87235, 96795, 126363, 129825, 137903, 147825, 157023, 161325, 210605, 233685, 261705, 379089, 389475, 413709, 436175, 471069, 483975, 631815, 689515, 785115, 1053025, 1137267, 1168425, 1241127, 1308525, 1413207, 1895445, 2068545, 2355345, 3159075, 3411801, 3447575, 3723381, 3925575, 5686335, 6205635, 7066035, 9477225, 10066919, 10342725, 11170143, 11776725, 17059005, 18616905, 28431675, 30200757, 31028175, 35330175, 50334595, 55850715, 85295025, 90602271, 93084525, 151003785, 251672975, 271806813, 279253575, 453011355, 755018925, 815420439, 1359034065, 2265056775, 4077102195, 6795170325, 20385510975]

約数ペア:

[(1, 20385510975), (3, 6795170325), (5, 4077102195), (9, 2265056775), (15, 1359034065), (25, 815420439), (27, 755018925), (45, 453011355), (73, 279253575), (75, 271806813), (81, 251672975), (135, 151003785), (219, 93084525), (225, 90602271), (239, 85295025), (365, 55850715), (405, 50334595), (577, 35330175), (657, 31028175), (675, 30200757), (717, 28431675), (1095, 18616905), (1195, 17059005), (1731, 11776725), (1825, 11170143), (1971, 10342725), (2025, 10066919), (2151, 9477225), (2885, 7066035), (3285, 6205635), (3585, 5686335), (5193, 3925575), (5475, 3723381), (5913, 3447575), (5975, 3411801), (6453, 3159075), (8655, 2355345), (9855, 2068545), (10755, 1895445), (14425, 1413207), (15579, 1308525), (16425, 1241127), (17447, 1168425), (17925, 1137267), (19359, 1053025), (25965, 785115), (29565, 689515), (32265, 631815), (42121, 483975), (43275, 471069), (46737, 436175), (49275, 413709), (52341, 389475), (53775, 379089), (77895, 261705), (87235, 233685), (96795, 210605), (126363, 161325), (129825, 157023), (137903, 147825)]