215512155

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:281

約数の個数: 96

約数和(自身を含む): 416931840

約数和(自身を除く): 201419685

約数列:

[1, 3, 5, 9, 15, 19, 31, 45, 47, 57, 93, 95, 141, 155, 171, 173, 235, 279, 285, 423, 465, 519, 589, 705, 855, 865, 893, 1395, 1457, 1557, 1767, 2115, 2595, 2679, 2945, 3287, 4371, 4465, 5301, 5363, 7285, 7785, 8037, 8131, 8835, 9861, 13113, 13395, 16089, 16435, 21855, 24393, 26505, 26815, 27683, 29583, 40185, 40655, 48267, 49305, 65565, 73179, 80445, 83049, 101897, 121965, 138415, 147915, 154489, 241335, 249147, 252061, 305691, 365895, 415245, 463467, 509485, 756183, 772445, 917073, 1245735, 1260305, 1390401, 1528455, 2268549, 2317335, 3780915, 4585365, 4789159, 6952005, 11342745, 14367477, 23945795, 43102431, 71837385, 215512155]

約数ペア:

[(1, 215512155), (3, 71837385), (5, 43102431), (9, 23945795), (15, 14367477), (19, 11342745), (31, 6952005), (45, 4789159), (47, 4585365), (57, 3780915), (93, 2317335), (95, 2268549), (141, 1528455), (155, 1390401), (171, 1260305), (173, 1245735), (235, 917073), (279, 772445), (285, 756183), (423, 509485), (465, 463467), (519, 415245), (589, 365895), (705, 305691), (855, 252061), (865, 249147), (893, 241335), (1395, 154489), (1457, 147915), (1557, 138415), (1767, 121965), (2115, 101897), (2595, 83049), (2679, 80445), (2945, 73179), (3287, 65565), (4371, 49305), (4465, 48267), (5301, 40655), (5363, 40185), (7285, 29583), (7785, 27683), (8037, 26815), (8131, 26505), (8835, 24393), (9861, 21855), (13113, 16435), (13395, 16089)]