20996899740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{2213}}^1\times {\mathrm{52711}}^1$

素因数の和:54939

約数の個数: 72

約数和(自身を含む): 63720584928

約数和(自身を除く): 42723685188

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 2213, 4426, 6639, 8852, 11065, 13278, 19917, 22130, 26556, 33195, 39834, 44260, 52711, 66390, 79668, 99585, 105422, 132780, 158133, 199170, 210844, 263555, 316266, 398340, 474399, 527110, 632532, 790665, 948798, 1054220, 1581330, 1897596, 2371995, 3162660, 4743990, 9487980, 116649443, 233298886, 349948329, 466597772, 583247215, 699896658, 1049844987, 1166494430, 1399793316, 1749741645, 2099689974, 2332988860, 3499483290, 4199379948, 5249224935, 6998966580, 10498449870, 20996899740]

約数ペア:

[(1, 20996899740), (2, 10498449870), (3, 6998966580), (4, 5249224935), (5, 4199379948), (6, 3499483290), (9, 2332988860), (10, 2099689974), (12, 1749741645), (15, 1399793316), (18, 1166494430), (20, 1049844987), (30, 699896658), (36, 583247215), (45, 466597772), (60, 349948329), (90, 233298886), (180, 116649443), (2213, 9487980), (4426, 4743990), (6639, 3162660), (8852, 2371995), (11065, 1897596), (13278, 1581330), (19917, 1054220), (22130, 948798), (26556, 790665), (33195, 632532), (39834, 527110), (44260, 474399), (52711, 398340), (66390, 316266), (79668, 263555), (99585, 210844), (105422, 199170), (132780, 158133)]