20549970

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:237

約数の個数: 128

約数和(自身を含む): 63866880

約数和(自身を除く): 43316910

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 83, 90, 105, 126, 131, 135, 166, 189, 210, 249, 262, 270, 315, 378, 393, 415, 498, 581, 630, 655, 747, 786, 830, 917, 945, 1162, 1179, 1245, 1310, 1494, 1743, 1834, 1890, 1965, 2241, 2358, 2490, 2751, 2905, 3486, 3537, 3735, 3930, 4482, 4585, 5229, 5502, 5810, 5895, 7074, 7470, 8253, 8715, 9170, 10458, 10873, 11205, 11790, 13755, 15687, 16506, 17430, 17685, 21746, 22410, 24759, 26145, 27510, 31374, 32619, 35370, 41265, 49518, 52290, 54365, 65238, 76111, 78435, 82530, 97857, 108730, 123795, 152222, 156870, 163095, 195714, 228333, 247590, 293571, 326190, 380555, 456666, 489285, 587142, 684999, 761110, 978570, 1141665, 1369998, 1467855, 2054997, 2283330, 2935710, 3424995, 4109994, 6849990, 10274985, 20549970]

約数ペア:

[(1, 20549970), (2, 10274985), (3, 6849990), (5, 4109994), (6, 3424995), (7, 2935710), (9, 2283330), (10, 2054997), (14, 1467855), (15, 1369998), (18, 1141665), (21, 978570), (27, 761110), (30, 684999), (35, 587142), (42, 489285), (45, 456666), (54, 380555), (63, 326190), (70, 293571), (83, 247590), (90, 228333), (105, 195714), (126, 163095), (131, 156870), (135, 152222), (166, 123795), (189, 108730), (210, 97857), (249, 82530), (262, 78435), (270, 76111), (315, 65238), (378, 54365), (393, 52290), (415, 49518), (498, 41265), (581, 35370), (630, 32619), (655, 31374), (747, 27510), (786, 26145), (830, 24759), (917, 22410), (945, 21746), (1162, 17685), (1179, 17430), (1245, 16506), (1310, 15687), (1494, 13755), (1743, 11790), (1834, 11205), (1890, 10873), (1965, 10458), (2241, 9170), (2358, 8715), (2490, 8253), (2751, 7470), (2905, 7074), (3486, 5895), (3537, 5810), (3735, 5502), (3930, 5229), (4482, 4585)]