20678563516

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31}}^2\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:460

約数の個数: 108

約数和(自身を含む): 40959462600

約数和(自身を除く): 20280899084

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 139, 169, 229, 278, 338, 403, 458, 556, 676, 806, 916, 961, 1612, 1807, 1922, 2977, 3614, 3844, 4309, 5239, 5954, 7099, 7228, 8618, 10478, 11908, 12493, 14198, 17236, 20956, 23491, 24986, 28396, 31831, 38701, 46982, 49972, 56017, 63662, 77402, 92287, 93964, 112034, 127324, 133579, 154804, 162409, 184574, 220069, 224068, 267158, 324818, 369148, 413803, 440138, 534316, 649636, 728221, 827606, 880276, 986761, 1199731, 1456442, 1655212, 1736527, 1973522, 2399462, 2860897, 2912884, 3473054, 3947044, 4798924, 5379439, 5721794, 6946108, 10758878, 11443588, 12827893, 21517756, 22574851, 25655786, 30589591, 37191661, 45149702, 51311572, 61179182, 74383322, 90299404, 122358364, 148766644, 166762609, 333525218, 397664683, 667050436, 795329366, 1590658732, 5169640879, 10339281758, 20678563516]

約数ペア:

[(1, 20678563516), (2, 10339281758), (4, 5169640879), (13, 1590658732), (26, 795329366), (31, 667050436), (52, 397664683), (62, 333525218), (124, 166762609), (139, 148766644), (169, 122358364), (229, 90299404), (278, 74383322), (338, 61179182), (403, 51311572), (458, 45149702), (556, 37191661), (676, 30589591), (806, 25655786), (916, 22574851), (961, 21517756), (1612, 12827893), (1807, 11443588), (1922, 10758878), (2977, 6946108), (3614, 5721794), (3844, 5379439), (4309, 4798924), (5239, 3947044), (5954, 3473054), (7099, 2912884), (7228, 2860897), (8618, 2399462), (10478, 1973522), (11908, 1736527), (12493, 1655212), (14198, 1456442), (17236, 1199731), (20956, 986761), (23491, 880276), (24986, 827606), (28396, 728221), (31831, 649636), (38701, 534316), (46982, 440138), (49972, 413803), (56017, 369148), (63662, 324818), (77402, 267158), (92287, 224068), (93964, 220069), (112034, 184574), (127324, 162409), (133579, 154804)]