201531860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{103}}^1\times {\mathrm{271}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 452664576

約数和(自身を除く): 251132716

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 103, 190, 206, 271, 361, 380, 412, 515, 542, 722, 1030, 1084, 1355, 1444, 1805, 1957, 2060, 2710, 3610, 3914, 5149, 5420, 7220, 7828, 9785, 10298, 19570, 20596, 25745, 27913, 37183, 39140, 51490, 55826, 74366, 97831, 102980, 111652, 139565, 148732, 185915, 195662, 279130, 371830, 391324, 489155, 530347, 558260, 743660, 978310, 1060694, 1956620, 2121388, 2651735, 5303470, 10076593, 10606940, 20153186, 40306372, 50382965, 100765930, 201531860]

約数ペア:

[(1, 201531860), (2, 100765930), (4, 50382965), (5, 40306372), (10, 20153186), (19, 10606940), (20, 10076593), (38, 5303470), (76, 2651735), (95, 2121388), (103, 1956620), (190, 1060694), (206, 978310), (271, 743660), (361, 558260), (380, 530347), (412, 489155), (515, 391324), (542, 371830), (722, 279130), (1030, 195662), (1084, 185915), (1355, 148732), (1444, 139565), (1805, 111652), (1957, 102980), (2060, 97831), (2710, 74366), (3610, 55826), (3914, 51490), (5149, 39140), (5420, 37183), (7220, 27913), (7828, 25745), (9785, 20596), (10298, 19570)]