280705320

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{15913}}^1$

素因数の和:15944

約数の個数: 144

約数和(自身を含む): 1061304660

約数和(自身を除く): 780599340

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 49, 56, 60, 63, 70, 72, 84, 90, 98, 105, 120, 126, 140, 147, 168, 180, 196, 210, 245, 252, 280, 294, 315, 360, 392, 420, 441, 490, 504, 588, 630, 735, 840, 882, 980, 1176, 1260, 1470, 1764, 1960, 2205, 2520, 2940, 3528, 4410, 5880, 8820, 15913, 17640, 31826, 47739, 63652, 79565, 95478, 111391, 127304, 143217, 159130, 190956, 222782, 238695, 286434, 318260, 334173, 381912, 445564, 477390, 556955, 572868, 636520, 668346, 716085, 779737, 891128, 954780, 1002519, 1113910, 1145736, 1336692, 1432170, 1559474, 1670865, 1909560, 2005038, 2227820, 2339211, 2673384, 2864340, 3118948, 3341730, 3898685, 4010076, 4455640, 4678422, 5012595, 5728680, 6237896, 6683460, 7017633, 7797370, 8020152, 9356844, 10025190, 11696055, 13366920, 14035266, 15594740, 18713688, 20050380, 23392110, 28070532, 31189480, 35088165, 40100760, 46784220, 56141064, 70176330, 93568440, 140352660, 280705320]

約数ペア:

[(1, 280705320), (2, 140352660), (3, 93568440), (4, 70176330), (5, 56141064), (6, 46784220), (7, 40100760), (8, 35088165), (9, 31189480), (10, 28070532), (12, 23392110), (14, 20050380), (15, 18713688), (18, 15594740), (20, 14035266), (21, 13366920), (24, 11696055), (28, 10025190), (30, 9356844), (35, 8020152), (36, 7797370), (40, 7017633), (42, 6683460), (45, 6237896), (49, 5728680), (56, 5012595), (60, 4678422), (63, 4455640), (70, 4010076), (72, 3898685), (84, 3341730), (90, 3118948), (98, 2864340), (105, 2673384), (120, 2339211), (126, 2227820), (140, 2005038), (147, 1909560), (168, 1670865), (180, 1559474), (196, 1432170), (210, 1336692), (245, 1145736), (252, 1113910), (280, 1002519), (294, 954780), (315, 891128), (360, 779737), (392, 716085), (420, 668346), (441, 636520), (490, 572868), (504, 556955), (588, 477390), (630, 445564), (735, 381912), (840, 334173), (882, 318260), (980, 286434), (1176, 238695), (1260, 222782), (1470, 190956), (1764, 159130), (1960, 143217), (2205, 127304), (2520, 111391), (2940, 95478), (3528, 79565), (4410, 63652), (5880, 47739), (8820, 31826), (15913, 17640)]