20996820208

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{148669}}^1$

素因数の和:148794

約数の個数: 80

約数和(自身を含む): 50585859520

約数和(自身を除く): 29589039312

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 97, 104, 112, 182, 194, 208, 364, 388, 679, 728, 776, 1261, 1358, 1456, 1552, 2522, 2716, 5044, 5432, 8827, 10088, 10864, 17654, 20176, 35308, 70616, 141232, 148669, 297338, 594676, 1040683, 1189352, 1932697, 2081366, 2378704, 3865394, 4162732, 7730788, 8325464, 13528879, 14420893, 15461576, 16650928, 27057758, 28841786, 30923152, 54115516, 57683572, 100946251, 108231032, 115367144, 187471609, 201892502, 216462064, 230734288, 374943218, 403785004, 749886436, 807570008, 1312301263, 1499772872, 1615140016, 2624602526, 2999545744, 5249205052, 10498410104, 20996820208]

約数ペア:

[(1, 20996820208), (2, 10498410104), (4, 5249205052), (7, 2999545744), (8, 2624602526), (13, 1615140016), (14, 1499772872), (16, 1312301263), (26, 807570008), (28, 749886436), (52, 403785004), (56, 374943218), (91, 230734288), (97, 216462064), (104, 201892502), (112, 187471609), (182, 115367144), (194, 108231032), (208, 100946251), (364, 57683572), (388, 54115516), (679, 30923152), (728, 28841786), (776, 27057758), (1261, 16650928), (1358, 15461576), (1456, 14420893), (1552, 13528879), (2522, 8325464), (2716, 7730788), (5044, 4162732), (5432, 3865394), (8827, 2378704), (10088, 2081366), (10864, 1932697), (17654, 1189352), (20176, 1040683), (35308, 594676), (70616, 297338), (141232, 148669)]