20145431440

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{128413}}^1$

素因数の和:128516

約数の個数: 80

約数和(自身を含む): 49012028208

約数和(自身を除く): 28866596768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 53, 74, 80, 106, 148, 185, 212, 265, 296, 370, 424, 530, 592, 740, 848, 1060, 1480, 1961, 2120, 2960, 3922, 4240, 7844, 9805, 15688, 19610, 31376, 39220, 78440, 128413, 156880, 256826, 513652, 642065, 1027304, 1284130, 2054608, 2568260, 4751281, 5136520, 6805889, 9502562, 10273040, 13611778, 19005124, 23756405, 27223556, 34029445, 38010248, 47512810, 54447112, 68058890, 76020496, 95025620, 108894224, 136117780, 190051240, 251817893, 272235560, 380102480, 503635786, 544471120, 1007271572, 1259089465, 2014543144, 2518178930, 4029086288, 5036357860, 10072715720, 20145431440]

約数ペア:

[(1, 20145431440), (2, 10072715720), (4, 5036357860), (5, 4029086288), (8, 2518178930), (10, 2014543144), (16, 1259089465), (20, 1007271572), (37, 544471120), (40, 503635786), (53, 380102480), (74, 272235560), (80, 251817893), (106, 190051240), (148, 136117780), (185, 108894224), (212, 95025620), (265, 76020496), (296, 68058890), (370, 54447112), (424, 47512810), (530, 38010248), (592, 34029445), (740, 27223556), (848, 23756405), (1060, 19005124), (1480, 13611778), (1961, 10273040), (2120, 9502562), (2960, 6805889), (3922, 5136520), (4240, 4751281), (7844, 2568260), (9805, 2054608), (15688, 1284130), (19610, 1027304), (31376, 642065), (39220, 513652), (78440, 256826), (128413, 156880)]