20624240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2833}}^1$

素因数の和:2866

約数の個数: 80

約数和(自身を含む): 59037888

約数和(自身を除く): 38413648

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 2833, 3640, 5666, 7280, 11332, 14165, 19831, 22664, 28330, 36829, 39662, 45328, 56660, 73658, 79324, 99155, 113320, 147316, 158648, 184145, 198310, 226640, 257803, 294632, 317296, 368290, 396620, 515606, 589264, 736580, 793240, 1031212, 1289015, 1473160, 1586480, 2062424, 2578030, 2946320, 4124848, 5156060, 10312120, 20624240]

約数ペア:

[(1, 20624240), (2, 10312120), (4, 5156060), (5, 4124848), (7, 2946320), (8, 2578030), (10, 2062424), (13, 1586480), (14, 1473160), (16, 1289015), (20, 1031212), (26, 793240), (28, 736580), (35, 589264), (40, 515606), (52, 396620), (56, 368290), (65, 317296), (70, 294632), (80, 257803), (91, 226640), (104, 198310), (112, 184145), (130, 158648), (140, 147316), (182, 113320), (208, 99155), (260, 79324), (280, 73658), (364, 56660), (455, 45328), (520, 39662), (560, 36829), (728, 28330), (910, 22664), (1040, 19831), (1456, 14165), (1820, 11332), (2833, 7280), (3640, 5666)]