77889980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1$

素因数の和:315

約数の個数: 96

約数和(自身を含む): 195858432

約数和(自身を除く): 117968452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 131, 137, 140, 155, 217, 262, 274, 310, 434, 524, 548, 620, 655, 685, 868, 917, 959, 1085, 1310, 1370, 1834, 1918, 2170, 2620, 2740, 3668, 3836, 4061, 4247, 4340, 4585, 4795, 8122, 8494, 9170, 9590, 16244, 16988, 17947, 18340, 19180, 20305, 21235, 28427, 29729, 35894, 40610, 42470, 56854, 59458, 71788, 81220, 84940, 89735, 113708, 118916, 125629, 142135, 148645, 179470, 251258, 284270, 297290, 358940, 502516, 556357, 568540, 594580, 628145, 1112714, 1256290, 2225428, 2512580, 2781785, 3894499, 5563570, 7788998, 11127140, 15577996, 19472495, 38944990, 77889980]

約数ペア:

[(1, 77889980), (2, 38944990), (4, 19472495), (5, 15577996), (7, 11127140), (10, 7788998), (14, 5563570), (20, 3894499), (28, 2781785), (31, 2512580), (35, 2225428), (62, 1256290), (70, 1112714), (124, 628145), (131, 594580), (137, 568540), (140, 556357), (155, 502516), (217, 358940), (262, 297290), (274, 284270), (310, 251258), (434, 179470), (524, 148645), (548, 142135), (620, 125629), (655, 118916), (685, 113708), (868, 89735), (917, 84940), (959, 81220), (1085, 71788), (1310, 59458), (1370, 56854), (1834, 42470), (1918, 40610), (2170, 35894), (2620, 29729), (2740, 28427), (3668, 21235), (3836, 20305), (4061, 19180), (4247, 18340), (4340, 17947), (4585, 16988), (4795, 16244), (8122, 9590), (8494, 9170)]