21881170220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{54401}}^1$

素因数の和:54460

約数の個数: 144

約数和(自身を含む): 60211263168

約数和(自身を除く): 38330092948

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 52, 65, 68, 70, 85, 91, 119, 130, 140, 169, 170, 182, 221, 238, 260, 338, 340, 364, 442, 455, 476, 595, 676, 845, 884, 910, 1105, 1183, 1190, 1547, 1690, 1820, 2210, 2366, 2380, 2873, 3094, 3380, 4420, 4732, 5746, 5915, 6188, 7735, 11492, 11830, 14365, 15470, 20111, 23660, 28730, 30940, 40222, 54401, 57460, 80444, 100555, 108802, 201110, 217604, 272005, 380807, 402220, 544010, 707213, 761614, 924817, 1088020, 1414426, 1523228, 1849634, 1904035, 2828852, 3536065, 3699268, 3808070, 4624085, 4950491, 6473719, 7072130, 7616140, 9193769, 9248170, 9900982, 12022621, 12947438, 14144260, 18387538, 18496340, 19801964, 24045242, 24752455, 25894876, 32368595, 36775076, 45968845, 48090484, 49504910, 60113105, 64356383, 64737190, 84158347, 91937690, 99009820, 120226210, 128712766, 129474380, 156294073, 168316694, 183875380, 240452420, 257425532, 312588146, 321781915, 336633388, 420791735, 625176292, 643563830, 781470365, 841583470, 1094058511, 1287127660, 1562940730, 1683166940, 2188117022, 3125881460, 4376234044, 5470292555, 10940585110, 21881170220]

約数ペア:

[(1, 21881170220), (2, 10940585110), (4, 5470292555), (5, 4376234044), (7, 3125881460), (10, 2188117022), (13, 1683166940), (14, 1562940730), (17, 1287127660), (20, 1094058511), (26, 841583470), (28, 781470365), (34, 643563830), (35, 625176292), (52, 420791735), (65, 336633388), (68, 321781915), (70, 312588146), (85, 257425532), (91, 240452420), (119, 183875380), (130, 168316694), (140, 156294073), (169, 129474380), (170, 128712766), (182, 120226210), (221, 99009820), (238, 91937690), (260, 84158347), (338, 64737190), (340, 64356383), (364, 60113105), (442, 49504910), (455, 48090484), (476, 45968845), (595, 36775076), (676, 32368595), (845, 25894876), (884, 24752455), (910, 24045242), (1105, 19801964), (1183, 18496340), (1190, 18387538), (1547, 14144260), (1690, 12947438), (1820, 12022621), (2210, 9900982), (2366, 9248170), (2380, 9193769), (2873, 7616140), (3094, 7072130), (3380, 6473719), (4420, 4950491), (4732, 4624085), (5746, 3808070), (5915, 3699268), (6188, 3536065), (7735, 2828852), (11492, 1904035), (11830, 1849634), (14365, 1523228), (15470, 1414426), (20111, 1088020), (23660, 924817), (28730, 761614), (30940, 707213), (40222, 544010), (54401, 402220), (57460, 380807), (80444, 272005), (100555, 217604), (108802, 201110)]