21131036380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{381289}}^1$

素因数の和:381478

約数の個数: 48

約数和(自身を含む): 47273859360

約数和(自身を除く): 26142822980

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 163, 170, 326, 340, 652, 815, 1630, 2771, 3260, 5542, 11084, 13855, 27710, 55420, 381289, 762578, 1525156, 1906445, 3812890, 6481913, 7625780, 12963826, 25927652, 32409565, 62150107, 64819130, 124300214, 129638260, 248600428, 310750535, 621501070, 1056551819, 1243002140, 2113103638, 4226207276, 5282759095, 10565518190, 21131036380]

約数ペア:

[(1, 21131036380), (2, 10565518190), (4, 5282759095), (5, 4226207276), (10, 2113103638), (17, 1243002140), (20, 1056551819), (34, 621501070), (68, 310750535), (85, 248600428), (163, 129638260), (170, 124300214), (326, 64819130), (340, 62150107), (652, 32409565), (815, 25927652), (1630, 12963826), (2771, 7625780), (3260, 6481913), (5542, 3812890), (11084, 1906445), (13855, 1525156), (27710, 762578), (55420, 381289)]