256078486.0000000000

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1\times {\mathrm{3449}}^1$

素因数の和:3769

約数の個数: 128

約数和(自身を含む): 21620736000

約数和(自身を除く): 13507722280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 271, 280, 310, 434, 542, 620, 868, 1084, 1085, 1240, 1355, 1736, 1897, 2168, 2170, 2710, 3449, 3794, 4340, 5420, 6898, 7588, 8401, 8680, 9485, 10840, 13796, 15176, 16802, 17245, 18970, 24143, 27592, 33604, 34490, 37940, 42005, 48286, 58807, 67208, 68980, 75880, 84010, 96572, 106919, 117614, 120715, 137960, 168020, 193144, 213838, 235228, 241430, 294035, 336040, 427676, 470456, 482860, 534595, 588070, 748433, 855352, 934679, 965720, 1069190, 1176140, 1496866, 1869358, 2138380, 2352280, 2993732, 3738716, 3742165, 4276760, 4673395, 5987464, 6542753, 7477432, 7484330, 9346790, 13085506, 14968660, 18693580, 26171012, 28975049, 29937320, 32713765, 37387160, 52342024, 57950098, 65427530, 115900196, 130855060, 144875245, 202825343, 231800392, 261710120, 289750490, 405650686, 579500980, 811301372, 1014126715, 1159001960, 1622602744, 2028253430, 4056506860, 8113013720]

約数ペア:

[(1, 8113013720), (2, 4056506860), (4, 2028253430), (5, 1622602744), (7, 1159001960), (8, 1014126715), (10, 811301372), (14, 579500980), (20, 405650686), (28, 289750490), (31, 261710120), (35, 231800392), (40, 202825343), (56, 144875245), (62, 130855060), (70, 115900196), (124, 65427530), (140, 57950098), (155, 52342024), (217, 37387160), (248, 32713765), (271, 29937320), (280, 28975049), (310, 26171012), (434, 18693580), (542, 14968660), (620, 13085506), (868, 9346790), (1084, 7484330), (1085, 7477432), (1240, 6542753), (1355, 5987464), (1736, 4673395), (1897, 4276760), (2168, 3742165), (2170, 3738716), (2710, 2993732), (3449, 2352280), (3794, 2138380), (4340, 1869358), (5420, 1496866), (6898, 1176140), (7588, 1069190), (8401, 965720), (8680, 934679), (9485, 855352), (10840, 748433), (13796, 588070), (15176, 534595), (16802, 482860), (17245, 470456), (18970, 427676), (24143, 336040), (27592, 294035), (33604, 241430), (34490, 235228), (37940, 213838), (42005, 193144), (48286, 168020), (58807, 137960), (67208, 120715), (68980, 117614), (75880, 106919), (84010, 96572)]