20851520

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3833}}^1$

素因数の和:3867

約数の個数: 56

約数和(自身を含む): 52587144

約数和(自身を除く): 31735624

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3833, 5440, 7666, 15332, 19165, 30664, 38330, 61328, 65161, 76660, 122656, 130322, 153320, 245312, 260644, 306640, 325805, 521288, 613280, 651610, 1042576, 1226560, 1303220, 2085152, 2606440, 4170304, 5212880, 10425760, 20851520]

約数ペア:

[(1, 20851520), (2, 10425760), (4, 5212880), (5, 4170304), (8, 2606440), (10, 2085152), (16, 1303220), (17, 1226560), (20, 1042576), (32, 651610), (34, 613280), (40, 521288), (64, 325805), (68, 306640), (80, 260644), (85, 245312), (136, 153320), (160, 130322), (170, 122656), (272, 76660), (320, 65161), (340, 61328), (544, 38330), (680, 30664), (1088, 19165), (1360, 15332), (2720, 7666), (3833, 5440)]