20215568919

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{8389}}^1$

素因数の和:8529

約数の個数: 72

約数和(自身を含む): 34306307280

約数和(自身を除く): 14090738361

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 97, 147, 169, 273, 291, 507, 637, 679, 1183, 1261, 1911, 2037, 3549, 3783, 4753, 8281, 8389, 8827, 14259, 16393, 24843, 25167, 26481, 49179, 58723, 61789, 109057, 114751, 176169, 185367, 327171, 344253, 411061, 763399, 803257, 813733, 1233183, 1417741, 2290197, 2409771, 2441199, 4253223, 5343793, 5696131, 9924187, 10578529, 16031379, 17088393, 29772561, 31735587, 39872917, 69469309, 74049703, 119618751, 137520877, 208407927, 222149109, 412562631, 518347921, 962646139, 1555043763, 2887938417, 6738522973, 20215568919]

約数ペア:

[(1, 20215568919), (3, 6738522973), (7, 2887938417), (13, 1555043763), (21, 962646139), (39, 518347921), (49, 412562631), (91, 222149109), (97, 208407927), (147, 137520877), (169, 119618751), (273, 74049703), (291, 69469309), (507, 39872917), (637, 31735587), (679, 29772561), (1183, 17088393), (1261, 16031379), (1911, 10578529), (2037, 9924187), (3549, 5696131), (3783, 5343793), (4753, 4253223), (8281, 2441199), (8389, 2409771), (8827, 2290197), (14259, 1417741), (16393, 1233183), (24843, 813733), (25167, 803257), (26481, 763399), (49179, 411061), (58723, 344253), (61789, 327171), (109057, 185367), (114751, 176169)]