201915987

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{313}}^1$

素因数の和:492

約数の個数: 64

約数和(自身を含む): 354493440

約数和(自身を除く): 152577453

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 139, 221, 273, 313, 357, 417, 663, 939, 973, 1547, 1807, 2191, 2363, 2919, 4069, 4641, 5321, 5421, 6573, 7089, 12207, 12649, 15963, 16541, 28483, 30719, 37247, 37947, 43507, 49623, 69173, 85449, 92157, 111741, 130521, 207519, 215033, 304549, 484211, 565591, 645099, 739619, 913647, 1452633, 1696773, 2218857, 3959137, 5177333, 9615047, 11877411, 15531999, 28845141, 67305329, 201915987]

約数ペア:

[(1, 201915987), (3, 67305329), (7, 28845141), (13, 15531999), (17, 11877411), (21, 9615047), (39, 5177333), (51, 3959137), (91, 2218857), (119, 1696773), (139, 1452633), (221, 913647), (273, 739619), (313, 645099), (357, 565591), (417, 484211), (663, 304549), (939, 215033), (973, 207519), (1547, 130521), (1807, 111741), (2191, 92157), (2363, 85449), (2919, 69173), (4069, 49623), (4641, 43507), (5321, 37947), (5421, 37247), (6573, 30719), (7089, 28483), (12207, 16541), (12649, 15963)]