21854070

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{373}}^1$

素因数の和:427

約数の個数: 128

約数和(自身を含む): 68935680

約数和(自身を除く): 47081610

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 31, 35, 42, 45, 54, 62, 63, 70, 90, 93, 105, 126, 135, 155, 186, 189, 210, 217, 270, 279, 310, 315, 373, 378, 434, 465, 558, 630, 651, 746, 837, 930, 945, 1085, 1119, 1302, 1395, 1674, 1865, 1890, 1953, 2170, 2238, 2611, 2790, 3255, 3357, 3730, 3906, 4185, 5222, 5595, 5859, 6510, 6714, 7833, 8370, 9765, 10071, 11190, 11563, 11718, 13055, 15666, 16785, 19530, 20142, 23126, 23499, 26110, 29295, 33570, 34689, 39165, 46998, 50355, 57815, 58590, 69378, 70497, 78330, 80941, 100710, 104067, 115630, 117495, 140994, 161882, 173445, 208134, 234990, 242823, 312201, 346890, 352485, 404705, 485646, 520335, 624402, 704970, 728469, 809410, 1040670, 1214115, 1456938, 1561005, 2185407, 2428230, 3122010, 3642345, 4370814, 7284690, 10927035, 21854070]

約数ペア:

[(1, 21854070), (2, 10927035), (3, 7284690), (5, 4370814), (6, 3642345), (7, 3122010), (9, 2428230), (10, 2185407), (14, 1561005), (15, 1456938), (18, 1214115), (21, 1040670), (27, 809410), (30, 728469), (31, 704970), (35, 624402), (42, 520335), (45, 485646), (54, 404705), (62, 352485), (63, 346890), (70, 312201), (90, 242823), (93, 234990), (105, 208134), (126, 173445), (135, 161882), (155, 140994), (186, 117495), (189, 115630), (210, 104067), (217, 100710), (270, 80941), (279, 78330), (310, 70497), (315, 69378), (373, 58590), (378, 57815), (434, 50355), (465, 46998), (558, 39165), (630, 34689), (651, 33570), (746, 29295), (837, 26110), (930, 23499), (945, 23126), (1085, 20142), (1119, 19530), (1302, 16785), (1395, 15666), (1674, 13055), (1865, 11718), (1890, 11563), (1953, 11190), (2170, 10071), (2238, 9765), (2611, 8370), (2790, 7833), (3255, 6714), (3357, 6510), (3730, 5859), (3906, 5595), (4185, 5222)]