91861990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^2\times {\mathrm{79}}^1$

素因数の和:170

約数の個数: 72

約数和(自身を含む): 190179360

約数和(自身を除く): 98317370

約数列:

[1, 2, 5, 10, 11, 22, 31, 55, 62, 79, 110, 121, 155, 158, 242, 310, 341, 395, 605, 682, 790, 869, 961, 1210, 1705, 1738, 1922, 2449, 3410, 3751, 4345, 4805, 4898, 7502, 8690, 9559, 9610, 10571, 12245, 18755, 19118, 21142, 24490, 26939, 37510, 47795, 52855, 53878, 75919, 95590, 105710, 116281, 134695, 151838, 232562, 269390, 296329, 379595, 581405, 592658, 759190, 835109, 1162810, 1481645, 1670218, 2963290, 4175545, 8351090, 9186199, 18372398, 45930995, 91861990]

約数ペア:

[(1, 91861990), (2, 45930995), (5, 18372398), (10, 9186199), (11, 8351090), (22, 4175545), (31, 2963290), (55, 1670218), (62, 1481645), (79, 1162810), (110, 835109), (121, 759190), (155, 592658), (158, 581405), (242, 379595), (310, 296329), (341, 269390), (395, 232562), (605, 151838), (682, 134695), (790, 116281), (869, 105710), (961, 95590), (1210, 75919), (1705, 53878), (1738, 52855), (1922, 47795), (2449, 37510), (3410, 26939), (3751, 24490), (4345, 21142), (4805, 19118), (4898, 18755), (7502, 12245), (8690, 10571), (9559, 9610)]