20377760

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:226

約数の個数: 96

約数和(自身を含む): 52898832

約数和(自身を除く): 32521072

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 97, 101, 104, 130, 160, 194, 202, 208, 260, 388, 404, 416, 485, 505, 520, 776, 808, 970, 1010, 1040, 1261, 1313, 1552, 1616, 1940, 2020, 2080, 2522, 2626, 3104, 3232, 3880, 4040, 5044, 5252, 6305, 6565, 7760, 8080, 9797, 10088, 10504, 12610, 13130, 15520, 16160, 19594, 20176, 21008, 25220, 26260, 39188, 40352, 42016, 48985, 50440, 52520, 78376, 97970, 100880, 105040, 127361, 156752, 195940, 201760, 210080, 254722, 313504, 391880, 509444, 636805, 783760, 1018888, 1273610, 1567520, 2037776, 2547220, 4075552, 5094440, 10188880, 20377760]

約数ペア:

[(1, 20377760), (2, 10188880), (4, 5094440), (5, 4075552), (8, 2547220), (10, 2037776), (13, 1567520), (16, 1273610), (20, 1018888), (26, 783760), (32, 636805), (40, 509444), (52, 391880), (65, 313504), (80, 254722), (97, 210080), (101, 201760), (104, 195940), (130, 156752), (160, 127361), (194, 105040), (202, 100880), (208, 97970), (260, 78376), (388, 52520), (404, 50440), (416, 48985), (485, 42016), (505, 40352), (520, 39188), (776, 26260), (808, 25220), (970, 21008), (1010, 20176), (1040, 19594), (1261, 16160), (1313, 15520), (1552, 13130), (1616, 12610), (1940, 10504), (2020, 10088), (2080, 9797), (2522, 8080), (2626, 7760), (3104, 6565), (3232, 6305), (3880, 5252), (4040, 5044)]