20654550

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:187

約数の個数: 144

約数和(自身を含む): 64995840

約数和(自身を除く): 44341290

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 30, 35, 42, 45, 50, 63, 70, 75, 79, 83, 90, 105, 126, 150, 158, 166, 175, 210, 225, 237, 249, 315, 350, 395, 415, 450, 474, 498, 525, 553, 581, 630, 711, 747, 790, 830, 1050, 1106, 1162, 1185, 1245, 1422, 1494, 1575, 1659, 1743, 1975, 2075, 2370, 2490, 2765, 2905, 3150, 3318, 3486, 3555, 3735, 3950, 4150, 4977, 5229, 5530, 5810, 5925, 6225, 6557, 7110, 7470, 8295, 8715, 9954, 10458, 11850, 12450, 13114, 13825, 14525, 16590, 17430, 17775, 18675, 19671, 24885, 26145, 27650, 29050, 32785, 35550, 37350, 39342, 41475, 43575, 45899, 49770, 52290, 59013, 65570, 82950, 87150, 91798, 98355, 118026, 124425, 130725, 137697, 163925, 196710, 229495, 248850, 261450, 275394, 295065, 327850, 413091, 458990, 491775, 590130, 688485, 826182, 983550, 1147475, 1376970, 1475325, 2065455, 2294950, 2950650, 3442425, 4130910, 6884850, 10327275, 20654550]

約数ペア:

[(1, 20654550), (2, 10327275), (3, 6884850), (5, 4130910), (6, 3442425), (7, 2950650), (9, 2294950), (10, 2065455), (14, 1475325), (15, 1376970), (18, 1147475), (21, 983550), (25, 826182), (30, 688485), (35, 590130), (42, 491775), (45, 458990), (50, 413091), (63, 327850), (70, 295065), (75, 275394), (79, 261450), (83, 248850), (90, 229495), (105, 196710), (126, 163925), (150, 137697), (158, 130725), (166, 124425), (175, 118026), (210, 98355), (225, 91798), (237, 87150), (249, 82950), (315, 65570), (350, 59013), (395, 52290), (415, 49770), (450, 45899), (474, 43575), (498, 41475), (525, 39342), (553, 37350), (581, 35550), (630, 32785), (711, 29050), (747, 27650), (790, 26145), (830, 24885), (1050, 19671), (1106, 18675), (1162, 17775), (1185, 17430), (1245, 16590), (1422, 14525), (1494, 13825), (1575, 13114), (1659, 12450), (1743, 11850), (1975, 10458), (2075, 9954), (2370, 8715), (2490, 8295), (2765, 7470), (2905, 7110), (3150, 6557), (3318, 6225), (3486, 5925), (3555, 5810), (3735, 5530), (3950, 5229), (4150, 4977)]