1388174420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1\times {\mathrm{277}}^1$

素因数の和:513

約数の個数: 96

約数和(自身を含む): 3093672960

約数和(自身を除く): 1705498540

約数列:

[1, 2, 4, 5, 10, 20, 31, 59, 62, 118, 124, 137, 155, 236, 274, 277, 295, 310, 548, 554, 590, 620, 685, 1108, 1180, 1370, 1385, 1829, 2740, 2770, 3658, 4247, 5540, 7316, 8083, 8494, 8587, 9145, 16166, 16343, 16988, 17174, 18290, 21235, 32332, 32686, 34348, 36580, 37949, 40415, 42470, 42935, 65372, 75898, 80830, 81715, 84940, 85870, 151796, 161660, 163430, 171740, 189745, 250573, 326860, 379490, 501146, 506633, 758980, 1002292, 1013266, 1176419, 1252865, 2026532, 2238991, 2352838, 2505730, 2533165, 4477982, 4705676, 5011460, 5066330, 5882095, 8955964, 10132660, 11194955, 11764190, 22389910, 23528380, 44779820, 69408721, 138817442, 277634884, 347043605, 694087210, 1388174420]

約数ペア:

[(1, 1388174420), (2, 694087210), (4, 347043605), (5, 277634884), (10, 138817442), (20, 69408721), (31, 44779820), (59, 23528380), (62, 22389910), (118, 11764190), (124, 11194955), (137, 10132660), (155, 8955964), (236, 5882095), (274, 5066330), (277, 5011460), (295, 4705676), (310, 4477982), (548, 2533165), (554, 2505730), (590, 2352838), (620, 2238991), (685, 2026532), (1108, 1252865), (1180, 1176419), (1370, 1013266), (1385, 1002292), (1829, 758980), (2740, 506633), (2770, 501146), (3658, 379490), (4247, 326860), (5540, 250573), (7316, 189745), (8083, 171740), (8494, 163430), (8587, 161660), (9145, 151796), (16166, 85870), (16343, 84940), (16988, 81715), (17174, 80830), (18290, 75898), (21235, 65372), (32332, 42935), (32686, 42470), (34348, 40415), (36580, 37949)]