215492780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:279

約数の個数: 96

約数和(自身を含む): 489646080

約数和(自身を除く): 274153300

約数列:

[1, 2, 4, 5, 10, 20, 31, 43, 59, 62, 86, 118, 124, 137, 155, 172, 215, 236, 274, 295, 310, 430, 548, 590, 620, 685, 860, 1180, 1333, 1370, 1829, 2537, 2666, 2740, 3658, 4247, 5074, 5332, 5891, 6665, 7316, 8083, 8494, 9145, 10148, 11782, 12685, 13330, 16166, 16988, 18290, 21235, 23564, 25370, 26660, 29455, 32332, 36580, 40415, 42470, 50740, 58910, 78647, 80830, 84940, 117820, 157294, 161660, 182621, 250573, 314588, 347569, 365242, 393235, 501146, 695138, 730484, 786470, 913105, 1002292, 1252865, 1390276, 1572940, 1737845, 1826210, 2505730, 3475690, 3652420, 5011460, 6951380, 10774639, 21549278, 43098556, 53873195, 107746390, 215492780]

約数ペア:

[(1, 215492780), (2, 107746390), (4, 53873195), (5, 43098556), (10, 21549278), (20, 10774639), (31, 6951380), (43, 5011460), (59, 3652420), (62, 3475690), (86, 2505730), (118, 1826210), (124, 1737845), (137, 1572940), (155, 1390276), (172, 1252865), (215, 1002292), (236, 913105), (274, 786470), (295, 730484), (310, 695138), (430, 501146), (548, 393235), (590, 365242), (620, 347569), (685, 314588), (860, 250573), (1180, 182621), (1333, 161660), (1370, 157294), (1829, 117820), (2537, 84940), (2666, 80830), (2740, 78647), (3658, 58910), (4247, 50740), (5074, 42470), (5332, 40415), (5891, 36580), (6665, 32332), (7316, 29455), (8083, 26660), (8494, 25370), (9145, 23564), (10148, 21235), (11782, 18290), (12685, 16988), (13330, 16166)]