20751640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5701}}^1$

素因数の和:5732

約数の個数: 64

約数和(自身を含む): 57476160

約数和(自身を除く): 36724520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5701, 11402, 22804, 28505, 39907, 45608, 57010, 74113, 79814, 114020, 148226, 159628, 199535, 228040, 296452, 319256, 370565, 399070, 518791, 592904, 741130, 798140, 1037582, 1482260, 1596280, 2075164, 2593955, 2964520, 4150328, 5187910, 10375820, 20751640]

約数ペア:

[(1, 20751640), (2, 10375820), (4, 5187910), (5, 4150328), (7, 2964520), (8, 2593955), (10, 2075164), (13, 1596280), (14, 1482260), (20, 1037582), (26, 798140), (28, 741130), (35, 592904), (40, 518791), (52, 399070), (56, 370565), (65, 319256), (70, 296452), (91, 228040), (104, 199535), (130, 159628), (140, 148226), (182, 114020), (260, 79814), (280, 74113), (364, 57010), (455, 45608), (520, 39907), (728, 28505), (910, 22804), (1820, 11402), (3640, 5701)]