20903973909

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{23981}}^1$

素因数の和:24138

約数の個数: 64

約数和(自身を含む): 35755819008

約数和(自身を除く): 14851845099

約数列:

[1, 3, 7, 13, 21, 31, 39, 91, 93, 103, 217, 273, 309, 403, 651, 721, 1209, 1339, 2163, 2821, 3193, 4017, 8463, 9373, 9579, 22351, 23981, 28119, 41509, 67053, 71943, 124527, 167867, 290563, 311753, 503601, 743411, 871689, 935259, 2182271, 2230233, 2470043, 5203877, 6546813, 7410129, 9664343, 15611631, 17290301, 28993029, 32110559, 51870903, 67650401, 76571333, 96331677, 202951203, 224773913, 229713999, 535999331, 674321739, 995427329, 1607997993, 2986281987, 6967991303, 20903973909]

約数ペア:

[(1, 20903973909), (3, 6967991303), (7, 2986281987), (13, 1607997993), (21, 995427329), (31, 674321739), (39, 535999331), (91, 229713999), (93, 224773913), (103, 202951203), (217, 96331677), (273, 76571333), (309, 67650401), (403, 51870903), (651, 32110559), (721, 28993029), (1209, 17290301), (1339, 15611631), (2163, 9664343), (2821, 7410129), (3193, 6546813), (4017, 5203877), (8463, 2470043), (9373, 2230233), (9579, 2182271), (22351, 935259), (23981, 871689), (28119, 743411), (41509, 503601), (67053, 311753), (71943, 290563), (124527, 167867)]