20350260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:574

約数の個数: 144

約数和(自身を含む): 72963072

約数和(自身を除く): 52612812

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 60, 62, 63, 70, 84, 90, 93, 105, 124, 126, 140, 155, 180, 186, 210, 217, 252, 279, 310, 315, 372, 420, 434, 465, 521, 558, 620, 630, 651, 868, 930, 1042, 1085, 1116, 1260, 1302, 1395, 1563, 1860, 1953, 2084, 2170, 2604, 2605, 2790, 3126, 3255, 3647, 3906, 4340, 4689, 5210, 5580, 6252, 6510, 7294, 7812, 7815, 9378, 9765, 10420, 10941, 13020, 14588, 15630, 16151, 18235, 18756, 19530, 21882, 23445, 31260, 32302, 32823, 36470, 39060, 43764, 46890, 48453, 54705, 64604, 65646, 72940, 80755, 93780, 96906, 109410, 113057, 131292, 145359, 161510, 164115, 193812, 218820, 226114, 242265, 290718, 323020, 328230, 339171, 452228, 484530, 565285, 581436, 656460, 678342, 726795, 969060, 1017513, 1130570, 1356684, 1453590, 1695855, 2035026, 2261140, 2907180, 3391710, 4070052, 5087565, 6783420, 10175130, 20350260]

約数ペア:

[(1, 20350260), (2, 10175130), (3, 6783420), (4, 5087565), (5, 4070052), (6, 3391710), (7, 2907180), (9, 2261140), (10, 2035026), (12, 1695855), (14, 1453590), (15, 1356684), (18, 1130570), (20, 1017513), (21, 969060), (28, 726795), (30, 678342), (31, 656460), (35, 581436), (36, 565285), (42, 484530), (45, 452228), (60, 339171), (62, 328230), (63, 323020), (70, 290718), (84, 242265), (90, 226114), (93, 218820), (105, 193812), (124, 164115), (126, 161510), (140, 145359), (155, 131292), (180, 113057), (186, 109410), (210, 96906), (217, 93780), (252, 80755), (279, 72940), (310, 65646), (315, 64604), (372, 54705), (420, 48453), (434, 46890), (465, 43764), (521, 39060), (558, 36470), (620, 32823), (630, 32302), (651, 31260), (868, 23445), (930, 21882), (1042, 19530), (1085, 18756), (1116, 18235), (1260, 16151), (1302, 15630), (1395, 14588), (1563, 13020), (1860, 10941), (1953, 10420), (2084, 9765), (2170, 9378), (2604, 7815), (2605, 7812), (2790, 7294), (3126, 6510), (3255, 6252), (3647, 5580), (3906, 5210), (4340, 4689)]