20009781848

素因数分解:

$2^3\times 7^1\times {\mathrm{409}}^1\times {\mathrm{431}}^1\times {\mathrm{2027}}^1$

素因数の和:2880

約数の個数: 64

約数和(自身を含む): 43103923200

約数和(自身を除く): 23094141352

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 409, 431, 818, 862, 1636, 1724, 2027, 2863, 3017, 3272, 3448, 4054, 5726, 6034, 8108, 11452, 12068, 14189, 16216, 22904, 24136, 28378, 56756, 113512, 176279, 352558, 705116, 829043, 873637, 1233953, 1410232, 1658086, 1747274, 2467906, 3316172, 3494548, 4935812, 5803301, 6115459, 6632344, 6989096, 9871624, 11606602, 12230918, 23213204, 24461836, 46426408, 48923672, 357317533, 714635066, 1429270132, 2501222731, 2858540264, 5002445462, 10004890924, 20009781848]

約数ペア:

[(1, 20009781848), (2, 10004890924), (4, 5002445462), (7, 2858540264), (8, 2501222731), (14, 1429270132), (28, 714635066), (56, 357317533), (409, 48923672), (431, 46426408), (818, 24461836), (862, 23213204), (1636, 12230918), (1724, 11606602), (2027, 9871624), (2863, 6989096), (3017, 6632344), (3272, 6115459), (3448, 5803301), (4054, 4935812), (5726, 3494548), (6034, 3316172), (8108, 2467906), (11452, 1747274), (12068, 1658086), (14189, 1410232), (16216, 1233953), (22904, 873637), (24136, 829043), (28378, 705116), (56756, 352558), (113512, 176279)]