20691450

素因数分解:

$2^1\times 3^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1$

素因数の和:171

約数の個数: 144

約数和(自身を含む): 62558496

約数和(自身を除く): 41867046

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 25, 26, 27, 30, 39, 45, 50, 54, 65, 75, 78, 81, 90, 117, 130, 131, 135, 150, 162, 195, 225, 234, 243, 262, 270, 325, 351, 390, 393, 405, 450, 486, 585, 650, 655, 675, 702, 786, 810, 975, 1053, 1170, 1179, 1215, 1310, 1350, 1703, 1755, 1950, 1965, 2025, 2106, 2358, 2430, 2925, 3159, 3275, 3406, 3510, 3537, 3930, 4050, 5109, 5265, 5850, 5895, 6075, 6318, 6550, 7074, 8515, 8775, 9825, 10218, 10530, 10611, 11790, 12150, 15327, 15795, 17030, 17550, 17685, 19650, 21222, 25545, 26325, 29475, 30654, 31590, 31833, 35370, 42575, 45981, 51090, 52650, 53055, 58950, 63666, 76635, 78975, 85150, 88425, 91962, 106110, 127725, 137943, 153270, 157950, 159165, 176850, 229905, 255450, 265275, 275886, 318330, 383175, 413829, 459810, 530550, 689715, 766350, 795825, 827658, 1149525, 1379430, 1591650, 2069145, 2299050, 3448575, 4138290, 6897150, 10345725, 20691450]

約数ペア:

[(1, 20691450), (2, 10345725), (3, 6897150), (5, 4138290), (6, 3448575), (9, 2299050), (10, 2069145), (13, 1591650), (15, 1379430), (18, 1149525), (25, 827658), (26, 795825), (27, 766350), (30, 689715), (39, 530550), (45, 459810), (50, 413829), (54, 383175), (65, 318330), (75, 275886), (78, 265275), (81, 255450), (90, 229905), (117, 176850), (130, 159165), (131, 157950), (135, 153270), (150, 137943), (162, 127725), (195, 106110), (225, 91962), (234, 88425), (243, 85150), (262, 78975), (270, 76635), (325, 63666), (351, 58950), (390, 53055), (393, 52650), (405, 51090), (450, 45981), (486, 42575), (585, 35370), (650, 31833), (655, 31590), (675, 30654), (702, 29475), (786, 26325), (810, 25545), (975, 21222), (1053, 19650), (1170, 17685), (1179, 17550), (1215, 17030), (1310, 15795), (1350, 15327), (1703, 12150), (1755, 11790), (1950, 10611), (1965, 10530), (2025, 10218), (2106, 9825), (2358, 8775), (2430, 8515), (2925, 7074), (3159, 6550), (3275, 6318), (3406, 6075), (3510, 5895), (3537, 5850), (3930, 5265), (4050, 5109)]